library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "epeuva eni...

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Page 1: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

149

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155 M 6pTloC 1970

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159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

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n aV HO e Ern tqgtapjlOoS () il rv il fl V AlXJLe opoundov yo TpOttOshy1toLn9j fl 6pmpJj Ttje rUVUpjlOyi)~ waTE t6 60wp va jlil npooshyKPOUl] eie OUOeuroVU aTl)l Eiov TalHnc (1 V Male) ti va npOaKpOU1] E1ti TOO AuXlmou 0l(11O0 jlJjtWUe CV AUa l)

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7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 2: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

150 Ha pnor 1970

2 IkonOt TO tpcuvwv

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A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 3: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

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151 Mopnoc 1970

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bull

M6po~ 1970

tPwT 13 Po~ blo )lwdlJ- HJrtijrJFfraquot (ilt(JW tit fh roO r)e LQt)(OV 1~ftGX61i~oT06

POt ei Oi(]P nAPlQlHov lJQl ttlU1TJtJ Iii- ~fXTI~~ OIQ6tpLl(llIt(lmiddot

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H A CKtJVl1 autl ftXCI Jl1iICOC ]250 IJ uW6J1ctpov 1tUajl~I()+ J9H14 jlu Fe Kcd lJiuv crCl pOV6i56v-roov d ot t llv upxi)v tu0111(

(L ~UOT) too iSSrJt(Y t v6C dl~ )lltdlVI1~ dVtll 380 p amp1 tflv dplnv Kti 4 25 11 ampto t6 Jt1 pa~ tUUtfIlt M rrta -nv KUt(l(JK(lUfl V

t fl on avO) )eK6VTJ~ to ~ampOOC Co 6oaTo~ ~vto~ t1 t 1tpwtT)lt 3ui)pu1O OIltllPampItO QTUOIJOV KId til~ tu~amplI ro)v 150 Ilmiddot

ltb(uT _11

155 M 6pTloC 1970

tJ)WT 18 Pol) brrd~ tijl Il(o(Joywyov AtIGetJ)O~ ~eol dvae~ eV()j110rt)(y) OceOuE)~) TavQwnoV

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159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

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ETEPOV ~EIOVpound KTnJla Ttje IOOElJJI v (~t iv CiVOly~a ) dVal on lOr e TL V(1 a lJllOi(1 Ku piooe tl~ nlv apl OTEpUV nupeuroUlv nre LUVapJlo ytjc Ka tnt 11l1KOI TtjC ta~EWe TU)V 4 0 Jl T6 jow p n poaK pouEI Eltl TlOV OO KOOV Ti)~ o potptjr n po~ TOUTO oui TnV 1tEpi1tlOKlIV WUTTjV ItPOTEivEiUl 01lWC )1E)e i1l9f1 poundTrIKUAUjlle Tile tUVU PjlOy tjC aVEU 00K(8v

Kut 010 tae OUO cigtc 60100 )OOlOl e 1V Kal V (Kcd KupiwC o la Tli v IOatV V) 01001 va ATltpBlj ElOIKt IIPOO(( OiC) trv ~owtE pIKil v 1tapEIO V TfI~ ruvap~lo YTic Kal loiooe Etc T1lV apXi] v KUS aaov ttllt tpUiVETUL EK lOD 6)10161JlaTOe de Tilv Beatv TOUTTlV OTl jlIOU()shyyoOvtal AlaV ujlni~ai T01UTTltEe Kui anoK6UT)0le Tfie tpAeuro~6e emo ltj e na pelUe TI) e rlVUp~ortje

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8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 4: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

151 Mopnoc 1970

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EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 5: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

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H A CKtJVl1 autl ftXCI Jl1iICOC ]250 IJ uW6J1ctpov 1tUajl~I()+ J9H14 jlu Fe Kcd lJiuv crCl pOV6i56v-roov d ot t llv upxi)v tu0111(

(L ~UOT) too iSSrJt(Y t v6C dl~ )lltdlVI1~ dVtll 380 p amp1 tflv dplnv Kti 4 25 11 ampto t6 Jt1 pa~ tUUtfIlt M rrta -nv KUt(l(JK(lUfl V

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ltb(uT _11

155 M 6pTloC 1970

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159 M6pTlo~ 1970

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A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 6: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

M6po~ 1970

tPwT 13 Po~ blo )lwdlJ- HJrtijrJFfraquot (ilt(JW tit fh roO r)e LQt)(OV 1~ftGX61i~oT06

POt ei Oi(]P nAPlQlHov lJQl ttlU1TJtJ Iii- ~fXTI~~ OIQ6tpLl(llIt(lmiddot

tuvCltfu~ Ctp OOov to IJnytCHU iHII)~UtpOI nc AJrIJOtpa b umiddot qKtw iW t oc fiamp(H OC 81(1 tor j)rir 7tpciJtUli lTnpl1tTtJl If E[VI1 + 2050S JI ue9bull eve) olCi lr1~ fpd~ n)urai cu u[V(lI 204 80 Jl u 8 1tpOKu)miI (ITt TO GIj TOU 5rHIl OUgt(OU)1~ VOU KUjlGfO ElvUl 0 40 ~I ~16 Ta r ttH~iP Itp(otu~ Kcd 01 S ~l ampui tn~ tJ1tt n shy)zvtULa lttPl1ttiliaull

000 pO lQ -rflV POT)V e1 n v ~v auvlxdQ tOU OupottiP6n utshyt~ SHU )L)Y(L ft D fmlP1WIl ale TO 6Lo iCJ)jlU i) 6 lJlLOUpyi(L otnshyaijlu)V IC LJlh oov pound1ff6 olUtl1~ DOn o ~Jl tP IlO 1Cf lV IlliAll GOllTOr ttot tl) C 5uOPlllOlt 1-1pound (jdolV ltu6ptvolt 10 t il t ~ TampV

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H A CKtJVl1 autl ftXCI Jl1iICOC ]250 IJ uW6J1ctpov 1tUajl~I()+ J9H14 jlu Fe Kcd lJiuv crCl pOV6i56v-roov d ot t llv upxi)v tu0111(

(L ~UOT) too iSSrJt(Y t v6C dl~ )lltdlVI1~ dVtll 380 p amp1 tflv dplnv Kti 4 25 11 ampto t6 Jt1 pa~ tUUtfIlt M rrta -nv KUt(l(JK(lUfl V

t fl on avO) )eK6VTJ~ to ~ampOOC Co 6oaTo~ ~vto~ t1 t 1tpwtT)lt 3ui)pu1O OIltllPampItO QTUOIJOV KId til~ tu~amplI ro)v 150 Ilmiddot

ltb(uT _11

155 M 6pTloC 1970

tJ)WT 18 Pol) brrd~ tijl Il(o(Joywyov AtIGetJ)O~ ~eol dvae~ eV()j110rt)(y) OceOuE)~) TavQwnoV

ErriOllC rrpoc 67t0rpuynv tfe KaTQOI(j~ufje 111 MKlivle 1]pqJt1~ OEWe EOOKIJl6oillloov o ~6rpopot OlUtQ~UC t] QJtOTEAEO)HltIKWshytEpa troy 6no[wv evat T) aVUVW01C TOO nv6Jlpoundyoe tile olwpuyoc oJJEOWe KUtaVTl tOU 8uporppciYJlQtoe de UVOJJEtpOV 20139 Jl uE 9 KuiT) OUVEXIOIe tile ouhpuyoC tnt Jl~KOUC 1625 JJ IlE rt)JLTO C 720 JJ Ev OUVEXEiQ ET07to9Et~eTl T) EuvuPlloYTr JJE 7t)atOe de TTl V 6pXtlv 7 20 Jl Kai de to TCEpa 40 Il JJ~KOUC 1625 Jl ampte f) v t5691lICat6 JlIIKO CAlme nu9JJeurovoe 98 M ETa TO 7teuropUe 111e LU VQ PJJuylle TaUtlC OUYExl~ampTQt t] St(1pu~ t1je MEt t llCmiddot

ME tt]v olatallv tQUT1V EnEtpoundUx9 l POI) EvtOe tije ouraquoPUYOe Ii BaSD 6 ~ MelT~ o~lao~ 125 ~ allU crx~ashyOJJov 1tJ)M~v OIQOtQUPOUJltvwv ICUJJQtWV tqt OAOICfIPOU TOU JJt1OU e tll~ OHlJPUYO ano tfe 9tOEWe aIlEOWe ICQtcl Vtll toi 8uporppaYJJQt0e JlpoundXPI toO nEpmoc toO OJlOIOOJlQ1Olt a)Mi Ileuro OUVampXWC JlEtQUJJeuroVTlv poundVtQ01l

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Ele ta Ex 1 Kat 2 euroJlrpU(VEtUl li r EVUCtl Alutulu toO ME)EtI1shy8tytoe -Epyou

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(JgtWT 20 Po~ ampTO ltxcill~ fjtlraeurow~ ojJEaw xOtavr1] roV (veOlfeciy pO TO o

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TEoc EI n1 LX 9 Cai 10 poundJlIpCdVeurotClt il rtpotElyoJJEvll AEKQVll t]PEJJtl0EWe KUTCJVtTl toO 9uporppcrl ~aToc tv Ete ta lx I J KQI J2 li JlE eurot1l9eiOCl napa)jul it autflemiddot

~ ~ rill-i i I ) I ~L1m Iii II t Ii~~ toI--=l t

--shy 10- _ 1 ~ - C it pilf II I I e

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I

FR -middotmiddottsR~77 _ a --

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-

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I

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+

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pound

-shy -shy-----shy -~~~~~--~-~~- ~_r-----shy

l~~~~~~~i~~~~~~~I~~~~====~~====~~~=====~======~~- Avmiddot===~-=~=====-----~~~l Ex - 5 yoeO A~~la ~==a [ [[ - KciYoW - TaM~

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yo Lbull maba r a

-- shy

I ~ -

i

~fshy

shy

nogt -

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U~~ ~

I

9 dee IJt ar_

VuampiUiNij

I I I t i

I III

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I

--~-

LX 9 1pounddv1] r)(fI1 IOtW - i1wLJITt] nAtV(UWV 1rn t(neliIshy

QTOU - K dTl1fH - TOlal

L X 8 U )WfI )( I y~tcCtAlTT) - EVIQOJOt) ItE llpf)nl1shyY Ol)QV L11~~v a bull f(UtO~II~

I U~ ramp rtH ~ lip

bullL

-~

L

1x 10 le1ldvt] iUePOFW - lltQrUvT1 OIJ(JorpqOYJUHO - Xci

Til ll - Jofai

159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

I) H Yo)OAnjlia tii~ n ap ulCulJ1ttn piou L l(OpuYO e ltDuYfi e1vCll ouvot6v va itgtuYJl~tJJtOlnOij Jl E pound01 il ouo CrVoiYPOTa tWV 7 50~ K1(1 Hi IU lIC IV Kat V 6vaA6y~av sIva1 OUVUTOV vj oqalUJl EV orcf(IiJ~W HV 1 oD 60no t vtO~ T~e UqgtlcrfUJltvl1e JiIWPU iOC tP OY1l KUI nAloiov TOi) YEpyou Yo)QAllViue Ttje N Eue t fl e TU~tr T al~ 0)0 Jl (~S ev u~oly)1a) n tJlleu)1oD~EV OUOEJliav U1t lOPUIVW01V (Jleuro ouo avoiY ~I UTU)

ETEPOV ~EIOVpound KTnJla Ttje IOOElJJI v (~t iv CiVOly~a ) dVal on lOr e TL V(1 a lJllOi(1 Ku piooe tl~ nlv apl OTEpUV nupeuroUlv nre LUVapJlo ytjc Ka tnt 11l1KOI TtjC ta~EWe TU)V 4 0 Jl T6 jow p n poaK pouEI Eltl TlOV OO KOOV Ti)~ o potptjr n po~ TOUTO oui TnV 1tEpi1tlOKlIV WUTTjV ItPOTEivEiUl 01lWC )1E)e i1l9f1 poundTrIKUAUjlle Tile tUVU PjlOy tjC aVEU 00K(8v

Kut 010 tae OUO cigtc 60100 )OOlOl e 1V Kal V (Kcd KupiwC o la Tli v IOatV V) 01001 va ATltpBlj ElOIKt IIPOO(( OiC) trv ~owtE pIKil v 1tapEIO V TfI~ ruvap~lo YTic Kal loiooe Etc T1lV apXi] v KUS aaov ttllt tpUiVETUL EK lOD 6)10161JlaTOe de Tilv Beatv TOUTTlV OTl jlIOU()shyyoOvtal AlaV ujlni~ai T01UTTltEe Kui anoK6UT)0le Tfie tpAeuro~6e emo ltj e na pelUe TI) e rlVUp~ortje

n aV HO e Ern tqgtapjlOoS () il rv il fl V AlXJLe opoundov yo TpOttOshy1toLn9j fl 6pmpJj Ttje rUVUpjlOyi)~ waTE t6 60wp va jlil npooshyKPOUl] eie OUOeuroVU aTl)l Eiov TalHnc (1 V Male) ti va npOaKpOU1] E1ti TOO AuXlmou 0l(11O0 jlJjtWUe CV AUa l)

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n e fiS n EVEtptpe Tl KQi npOnYOUjlEvUX ui OT))lIOVPYOUjlEVQl emshytp1VHaKut aVOOjlQAlal Eie til v ltlpxilv toO n middottEup IJ(oD ump1e ly

oHH OD )lEIOOVTUl )l eTa TTlV TpOrrOnOLlOl V WUTTl V oi08T)two

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Env Uvn8Ef6le npotljlTle fl 11 e rEpu IUOIlt OTE EvtO TTl ~ ev crlVExeilt atoopUYOe 6n~LOUpYOOVTQ eurovtova O~UatOIlPOLIlEV a KUjlOTU OUOEJ-lIU Tpo1torroiT)O le T1)e MEfeurotTl C arrUITEiTftt Ka O aaov tlleuro lPilOTlouv paS n uSatoe EIC lO 6 jloioojla ltje tUIEOgtC teurolv 005 )1 01lU01 125 11 Ete tilv rrpuYjlO1tK6Tl1TU

7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 7: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

155 M 6pTloC 1970

tJ)WT 18 Pol) brrd~ tijl Il(o(Joywyov AtIGetJ)O~ ~eol dvae~ eV()j110rt)(y) OceOuE)~) TavQwnoV

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ME tt]v olatallv tQUT1V EnEtpoundUx9 l POI) EvtOe tije ouraquoPUYOe Ii BaSD 6 ~ MelT~ o~lao~ 125 ~ allU crx~ashyOJJov 1tJ)M~v OIQOtQUPOUJltvwv ICUJJQtWV tqt OAOICfIPOU TOU JJt1OU e tll~ OHlJPUYO ano tfe 9tOEWe aIlEOWe ICQtcl Vtll toi 8uporppaYJJQt0e JlpoundXPI toO nEpmoc toO OJlOIOOJlQ1Olt a)Mi Ileuro OUVampXWC JlEtQUJJeuroVTlv poundVtQ01l

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159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

I) H Yo)OAnjlia tii~ n ap ulCulJ1ttn piou L l(OpuYO e ltDuYfi e1vCll ouvot6v va itgtuYJl~tJJtOlnOij Jl E pound01 il ouo CrVoiYPOTa tWV 7 50~ K1(1 Hi IU lIC IV Kat V 6vaA6y~av sIva1 OUVUTOV vj oqalUJl EV orcf(IiJ~W HV 1 oD 60no t vtO~ T~e UqgtlcrfUJltvl1e JiIWPU iOC tP OY1l KUI nAloiov TOi) YEpyou Yo)QAllViue Ttje N Eue t fl e TU~tr T al~ 0)0 Jl (~S ev u~oly)1a) n tJlleu)1oD~EV OUOEJliav U1t lOPUIVW01V (Jleuro ouo avoiY ~I UTU)

ETEPOV ~EIOVpound KTnJla Ttje IOOElJJI v (~t iv CiVOly~a ) dVal on lOr e TL V(1 a lJllOi(1 Ku piooe tl~ nlv apl OTEpUV nupeuroUlv nre LUVapJlo ytjc Ka tnt 11l1KOI TtjC ta~EWe TU)V 4 0 Jl T6 jow p n poaK pouEI Eltl TlOV OO KOOV Ti)~ o potptjr n po~ TOUTO oui TnV 1tEpi1tlOKlIV WUTTjV ItPOTEivEiUl 01lWC )1E)e i1l9f1 poundTrIKUAUjlle Tile tUVU PjlOy tjC aVEU 00K(8v

Kut 010 tae OUO cigtc 60100 )OOlOl e 1V Kal V (Kcd KupiwC o la Tli v IOatV V) 01001 va ATltpBlj ElOIKt IIPOO(( OiC) trv ~owtE pIKil v 1tapEIO V TfI~ ruvap~lo YTic Kal loiooe Etc T1lV apXi] v KUS aaov ttllt tpUiVETUL EK lOD 6)10161JlaTOe de Tilv Beatv TOUTTlV OTl jlIOU()shyyoOvtal AlaV ujlni~ai T01UTTltEe Kui anoK6UT)0le Tfie tpAeuro~6e emo ltj e na pelUe TI) e rlVUp~ortje

n aV HO e Ern tqgtapjlOoS () il rv il fl V AlXJLe opoundov yo TpOttOshy1toLn9j fl 6pmpJj Ttje rUVUpjlOyi)~ waTE t6 60wp va jlil npooshyKPOUl] eie OUOeuroVU aTl)l Eiov TalHnc (1 V Male) ti va npOaKpOU1] E1ti TOO AuXlmou 0l(11O0 jlJjtWUe CV AUa l)

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oHH OD )lEIOOVTUl )l eTa TTlV TpOrrOnOLlOl V WUTTl V oi08T)two

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Env Uvn8Ef6le npotljlTle fl 11 e rEpu IUOIlt OTE EvtO TTl ~ ev crlVExeilt atoopUYOe 6n~LOUpYOOVTQ eurovtova O~UatOIlPOLIlEV a KUjlOTU OUOEJ-lIU Tpo1torroiT)O le T1)e MEfeurotTl C arrUITEiTftt Ka O aaov tlleuro lPilOTlouv paS n uSatoe EIC lO 6 jloioojla ltje tUIEOgtC teurolv 005 )1 01lU01 125 11 Ete tilv rrpuYjlO1tK6Tl1TU

7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

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A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 8: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

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159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

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oHH OD )lEIOOVTUl )l eTa TTlV TpOrrOnOLlOl V WUTTl V oi08T)two

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ErcioTle f] crTpoundVIC QUTOO O~ov vu lOnoSe TT)Sij poundIe UIVO)l ETPOV 20-1- 00 ~IU E S wat orav TO Elup6ltpputJlQ poundIV ai OVOI KTOV fl EAEU9europu poundnHpOVEIo ToD uOUtae ele t li v StOIV TOU ttAeuroUP IlCOi) UJt EpxE1Ala1OU 016 nupoXTl v 30 11 3 0 va EOp[OK ETa t Ka TcoSeV ttj t OTEjI6W aUTOO KCnCt O IOJl

5) To uVoe toD elpOlllPciY)luw ampeov VIi Elva l TO UAUXtcr10V 270~ WOTE 6rav tODTO elVQl middot~ElOT6v va jln unEPXE1AitlO TaI uttO tol1 130aTOC oihe KUTa 111V apxtK Jjv IlIUOlV KAELOiJlQTOe t o )1OI) UIIO TnV ttpoD n69 Eolv 6n 6 xPOVoe KAElOljlQTOe toO OUPOl(lpli(patoe OCr Elval )lEyuAunpOC t(i)v 3

6)AjlEOW PErt TO 9upOlppaYIlU oeov va rrpo pAetpSfj f] lOKCt vn nPE~t10eW PX 9 Y10) 11 ~elooOle TOO (jIVOUe TOO 6va ~a9 )100 auvtx IOle ltje OIWPUYOt jleuro n[noc 720 Jl tnl ~t1K OUe 1625 jI KUt ltp 6SABIV Ie rUvup~Oytje jlilKOUt 1625 jl ~euro nAutOe euroIe Titv apxTl V 720 jl Kui sie T6 IFAOe 50 ~1 KUI KUta )1tjKO~ KAio lV 1tU9lJEVOt 98 (Lxmiddot [[ - 12)

Eie 01 ItEpiltTWOLV npo Tljl1181j il KamOKwJj iEKavlle JjPE)li) shyaeroe 6TE Jj po il poundvT6e Tile EV ouvExei_~ OtWpOYOt Elval l inv IKovonotllHKrl TO UVoe toD Ucent(ttOe EVtOe TaOtTle )1~ KliOIV nUSIl~vOC 100 00 npohUyenE tft to~eroe T(UV 150 jl ampui 1I0POxitV 30 ~$OA Kui WI eK TOUlQU OEOV va lponOrrOlT)90Dv ta(f) pwr to CJXt01U Ttje ME H tTlt Tfl e auopuyoe ue 6crov HEUSEPOV vwoe ttje TnIEWe tOOV 0 15jl Mv ElvUI Kuru Til yvdraquo)1nv )1UC 6PKETOV

Env Uvn8Ef6le npotljlTle fl 11 e rEpu IUOIlt OTE EvtO TTl ~ ev crlVExeilt atoopUYOe 6n~LOUpYOOVTQ eurovtova O~UatOIlPOLIlEV a KUjlOTU OUOEJ-lIU Tpo1torroiT)O le T1)e MEfeurotTl C arrUITEiTftt Ka O aaov tlleuro lPilOTlouv paS n uSatoe EIC lO 6 jloioojla ltje tUIEOgtC teurolv 005 )1 01lU01 125 11 Ete tilv rrpuYjlO1tK6Tl1TU

7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 9: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

I

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pound

-shy -shy-----shy -~~~~~--~-~~- ~_r-----shy

l~~~~~~~i~~~~~~~I~~~~====~~====~~~=====~======~~- Avmiddot===~-=~=====-----~~~l Ex - 5 yoeO A~~la ~==a [ [[ - KciYoW - TaM~

WMH IltATA MI-IKOr Of AON OI

yo Lbull maba r a

-- shy

I ~ -

i

~fshy

shy

nogt -

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I

9 dee IJt ar_

VuampiUiNij

I I I t i

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I

--~-

LX 9 1pounddv1] r)(fI1 IOtW - i1wLJITt] nAtV(UWV 1rn t(neliIshy

QTOU - K dTl1fH - TOlal

L X 8 U )WfI )( I y~tcCtAlTT) - EVIQOJOt) ItE llpf)nl1shyY Ol)QV L11~~v a bull f(UtO~II~

I U~ ramp rtH ~ lip

bullL

-~

L

1x 10 le1ldvt] iUePOFW - lltQrUvT1 OIJ(JorpqOYJUHO - Xci

Til ll - Jofai

159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

I) H Yo)OAnjlia tii~ n ap ulCulJ1ttn piou L l(OpuYO e ltDuYfi e1vCll ouvot6v va itgtuYJl~tJJtOlnOij Jl E pound01 il ouo CrVoiYPOTa tWV 7 50~ K1(1 Hi IU lIC IV Kat V 6vaA6y~av sIva1 OUVUTOV vj oqalUJl EV orcf(IiJ~W HV 1 oD 60no t vtO~ T~e UqgtlcrfUJltvl1e JiIWPU iOC tP OY1l KUI nAloiov TOi) YEpyou Yo)QAllViue Ttje N Eue t fl e TU~tr T al~ 0)0 Jl (~S ev u~oly)1a) n tJlleu)1oD~EV OUOEJliav U1t lOPUIVW01V (Jleuro ouo avoiY ~I UTU)

ETEPOV ~EIOVpound KTnJla Ttje IOOElJJI v (~t iv CiVOly~a ) dVal on lOr e TL V(1 a lJllOi(1 Ku piooe tl~ nlv apl OTEpUV nupeuroUlv nre LUVapJlo ytjc Ka tnt 11l1KOI TtjC ta~EWe TU)V 4 0 Jl T6 jow p n poaK pouEI Eltl TlOV OO KOOV Ti)~ o potptjr n po~ TOUTO oui TnV 1tEpi1tlOKlIV WUTTjV ItPOTEivEiUl 01lWC )1E)e i1l9f1 poundTrIKUAUjlle Tile tUVU PjlOy tjC aVEU 00K(8v

Kut 010 tae OUO cigtc 60100 )OOlOl e 1V Kal V (Kcd KupiwC o la Tli v IOatV V) 01001 va ATltpBlj ElOIKt IIPOO(( OiC) trv ~owtE pIKil v 1tapEIO V TfI~ ruvap~lo YTic Kal loiooe Etc T1lV apXi] v KUS aaov ttllt tpUiVETUL EK lOD 6)10161JlaTOe de Tilv Beatv TOUTTlV OTl jlIOU()shyyoOvtal AlaV ujlni~ai T01UTTltEe Kui anoK6UT)0le Tfie tpAeuro~6e emo ltj e na pelUe TI) e rlVUp~ortje

n aV HO e Ern tqgtapjlOoS () il rv il fl V AlXJLe opoundov yo TpOttOshy1toLn9j fl 6pmpJj Ttje rUVUpjlOyi)~ waTE t6 60wp va jlil npooshyKPOUl] eie OUOeuroVU aTl)l Eiov TalHnc (1 V Male) ti va npOaKpOU1] E1ti TOO AuXlmou 0l(11O0 jlJjtWUe CV AUa l)

2) bullH Kurn )l ~J(ot K ime iOi) KAElO lOD A y(r)yo D amptov va )lEt(J)shyet ano 15 Elt 1) WOTe 0 ltueJlil v poundIe TnV apxilv l OOTOU 010 KUteuroST] QTa 020 )1 nep inou jlt tnaK6AoJaov uUT)aLV KaTa 020 jl Tofl 6vofklSjlOi) Elt tTl elaooov lTie rUVQPjlOY~ Toino cup pound016 DEAtl6lvE I tTl V poilv KQtCL Til v Eioooov euroIr Tilv nQpaKu~1tnlPIO v atWpuYQ KUt Ctep poundTEPOU KQoplf36~el Tilv neusepuv poundJ1ltp6 veurotav toi) OOQTOr WaTe TO(ho v6 ~il ttpOashyKpC0~ tl i o oootv aT)IlEIOVhi Tf e 6 potptje KUla TTl VAUOl I V

3) H leKOvl) rPWl0EWt n eoptOlCO)leuroVl 6~faoor KUTCtvln lOG ntpat~ toO KAElaT oi) A-(wyoi) oEOv vel eKpa8uv8 t1 KUla 050 jl ltEplnOl

n e fiS n EVEtptpe Tl KQi npOnYOUjlEvUX ui OT))lIOVPYOUjlEVQl emshytp1VHaKut aVOOjlQAlal Eie til v ltlpxilv toO n middottEup IJ(oD ump1e ly

oHH OD )lEIOOVTUl )l eTa TTlV TpOrrOnOLlOl V WUTTl V oi08T)two

4) T6 Jlit K0t TOU nl_wplKOU onEPXELALOtOU OEOV 016 uU~llSi1

O_QtpP~ waTE va o rpoyyuffU90(W Ta lhcpu alHol) np6~ linoshytpu~r v O l poj3 l f la)lWV OitlvE~ blpO)llato1tOloi)vlO ~t lilv OIUshyra tv ti) MeAL1IK

ErcioTle f] crTpoundVIC QUTOO O~ov vu lOnoSe TT)Sij poundIe UIVO)l ETPOV 20-1- 00 ~IU E S wat orav TO Elup6ltpputJlQ poundIV ai OVOI KTOV fl EAEU9europu poundnHpOVEIo ToD uOUtae ele t li v StOIV TOU ttAeuroUP IlCOi) UJt EpxE1Ala1OU 016 nupoXTl v 30 11 3 0 va EOp[OK ETa t Ka TcoSeV ttj t OTEjI6W aUTOO KCnCt O IOJl

5) To uVoe toD elpOlllPciY)luw ampeov VIi Elva l TO UAUXtcr10V 270~ WOTE 6rav tODTO elVQl middot~ElOT6v va jln unEPXE1AitlO TaI uttO tol1 130aTOC oihe KUTa 111V apxtK Jjv IlIUOlV KAELOiJlQTOe t o )1OI) UIIO TnV ttpoD n69 Eolv 6n 6 xPOVoe KAElOljlQTOe toO OUPOl(lpli(patoe OCr Elval )lEyuAunpOC t(i)v 3

6)AjlEOW PErt TO 9upOlppaYIlU oeov va rrpo pAetpSfj f] lOKCt vn nPE~t10eW PX 9 Y10) 11 ~elooOle TOO (jIVOUe TOO 6va ~a9 )100 auvtx IOle ltje OIWPUYOt jleuro n[noc 720 Jl tnl ~t1K OUe 1625 jI KUt ltp 6SABIV Ie rUvup~Oytje jlilKOUt 1625 jl ~euro nAutOe euroIe Titv apxTl V 720 jl Kui sie T6 IFAOe 50 ~1 KUI KUta )1tjKO~ KAio lV 1tU9lJEVOt 98 (Lxmiddot [[ - 12)

Eie 01 ItEpiltTWOLV npo Tljl1181j il KamOKwJj iEKavlle JjPE)li) shyaeroe 6TE Jj po il poundvT6e Tile EV ouvExei_~ OtWpOYOt Elval l inv IKovonotllHKrl TO UVoe toD Ucent(ttOe EVtOe TaOtTle )1~ KliOIV nUSIl~vOC 100 00 npohUyenE tft to~eroe T(UV 150 jl ampui 1I0POxitV 30 ~$OA Kui WI eK TOUlQU OEOV va lponOrrOlT)90Dv ta(f) pwr to CJXt01U Ttje ME H tTlt Tfl e auopuyoe ue 6crov HEUSEPOV vwoe ttje TnIEWe tOOV 0 15jl Mv ElvUI Kuru Til yvdraquo)1nv )1UC 6PKETOV

Env Uvn8Ef6le npotljlTle fl 11 e rEpu IUOIlt OTE EvtO TTl ~ ev crlVExeilt atoopUYOe 6n~LOUpYOOVTQ eurovtova O~UatOIlPOLIlEV a KUjlOTU OUOEJ-lIU Tpo1torroiT)O le T1)e MEfeurotTl C arrUITEiTftt Ka O aaov tlleuro lPilOTlouv paS n uSatoe EIC lO 6 jloioojla ltje tUIEOgtC teurolv 005 )1 01lU01 125 11 Ete tilv rrpuYjlO1tK6Tl1TU

7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 10: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

I

9 dee IJt ar_

VuampiUiNij

I I I t i

I III

~ It I taltSI -h~~~~==i pi-~ bull

I

--~-

LX 9 1pounddv1] r)(fI1 IOtW - i1wLJITt] nAtV(UWV 1rn t(neliIshy

QTOU - K dTl1fH - TOlal

L X 8 U )WfI )( I y~tcCtAlTT) - EVIQOJOt) ItE llpf)nl1shyY Ol)QV L11~~v a bull f(UtO~II~

I U~ ramp rtH ~ lip

bullL

-~

L

1x 10 le1ldvt] iUePOFW - lltQrUvT1 OIJ(JorpqOYJUHO - Xci

Til ll - Jofai

159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

I) H Yo)OAnjlia tii~ n ap ulCulJ1ttn piou L l(OpuYO e ltDuYfi e1vCll ouvot6v va itgtuYJl~tJJtOlnOij Jl E pound01 il ouo CrVoiYPOTa tWV 7 50~ K1(1 Hi IU lIC IV Kat V 6vaA6y~av sIva1 OUVUTOV vj oqalUJl EV orcf(IiJ~W HV 1 oD 60no t vtO~ T~e UqgtlcrfUJltvl1e JiIWPU iOC tP OY1l KUI nAloiov TOi) YEpyou Yo)QAllViue Ttje N Eue t fl e TU~tr T al~ 0)0 Jl (~S ev u~oly)1a) n tJlleu)1oD~EV OUOEJliav U1t lOPUIVW01V (Jleuro ouo avoiY ~I UTU)

ETEPOV ~EIOVpound KTnJla Ttje IOOElJJI v (~t iv CiVOly~a ) dVal on lOr e TL V(1 a lJllOi(1 Ku piooe tl~ nlv apl OTEpUV nupeuroUlv nre LUVapJlo ytjc Ka tnt 11l1KOI TtjC ta~EWe TU)V 4 0 Jl T6 jow p n poaK pouEI Eltl TlOV OO KOOV Ti)~ o potptjr n po~ TOUTO oui TnV 1tEpi1tlOKlIV WUTTjV ItPOTEivEiUl 01lWC )1E)e i1l9f1 poundTrIKUAUjlle Tile tUVU PjlOy tjC aVEU 00K(8v

Kut 010 tae OUO cigtc 60100 )OOlOl e 1V Kal V (Kcd KupiwC o la Tli v IOatV V) 01001 va ATltpBlj ElOIKt IIPOO(( OiC) trv ~owtE pIKil v 1tapEIO V TfI~ ruvap~lo YTic Kal loiooe Etc T1lV apXi] v KUS aaov ttllt tpUiVETUL EK lOD 6)10161JlaTOe de Tilv Beatv TOUTTlV OTl jlIOU()shyyoOvtal AlaV ujlni~ai T01UTTltEe Kui anoK6UT)0le Tfie tpAeuro~6e emo ltj e na pelUe TI) e rlVUp~ortje

n aV HO e Ern tqgtapjlOoS () il rv il fl V AlXJLe opoundov yo TpOttOshy1toLn9j fl 6pmpJj Ttje rUVUpjlOyi)~ waTE t6 60wp va jlil npooshyKPOUl] eie OUOeuroVU aTl)l Eiov TalHnc (1 V Male) ti va npOaKpOU1] E1ti TOO AuXlmou 0l(11O0 jlJjtWUe CV AUa l)

2) bullH Kurn )l ~J(ot K ime iOi) KAElO lOD A y(r)yo D amptov va )lEt(J)shyet ano 15 Elt 1) WOTe 0 ltueJlil v poundIe TnV apxilv l OOTOU 010 KUteuroST] QTa 020 )1 nep inou jlt tnaK6AoJaov uUT)aLV KaTa 020 jl Tofl 6vofklSjlOi) Elt tTl elaooov lTie rUVQPjlOY~ Toino cup pound016 DEAtl6lvE I tTl V poilv KQtCL Til v Eioooov euroIr Tilv nQpaKu~1tnlPIO v atWpuYQ KUt Ctep poundTEPOU KQoplf36~el Tilv neusepuv poundJ1ltp6 veurotav toi) OOQTOr WaTe TO(ho v6 ~il ttpOashyKpC0~ tl i o oootv aT)IlEIOVhi Tf e 6 potptje KUla TTl VAUOl I V

3) H leKOvl) rPWl0EWt n eoptOlCO)leuroVl 6~faoor KUTCtvln lOG ntpat~ toO KAElaT oi) A-(wyoi) oEOv vel eKpa8uv8 t1 KUla 050 jl ltEplnOl

n e fiS n EVEtptpe Tl KQi npOnYOUjlEvUX ui OT))lIOVPYOUjlEVQl emshytp1VHaKut aVOOjlQAlal Eie til v ltlpxilv toO n middottEup IJ(oD ump1e ly

oHH OD )lEIOOVTUl )l eTa TTlV TpOrrOnOLlOl V WUTTl V oi08T)two

4) T6 Jlit K0t TOU nl_wplKOU onEPXELALOtOU OEOV 016 uU~llSi1

O_QtpP~ waTE va o rpoyyuffU90(W Ta lhcpu alHol) np6~ linoshytpu~r v O l poj3 l f la)lWV OitlvE~ blpO)llato1tOloi)vlO ~t lilv OIUshyra tv ti) MeAL1IK

ErcioTle f] crTpoundVIC QUTOO O~ov vu lOnoSe TT)Sij poundIe UIVO)l ETPOV 20-1- 00 ~IU E S wat orav TO Elup6ltpputJlQ poundIV ai OVOI KTOV fl EAEU9europu poundnHpOVEIo ToD uOUtae ele t li v StOIV TOU ttAeuroUP IlCOi) UJt EpxE1Ala1OU 016 nupoXTl v 30 11 3 0 va EOp[OK ETa t Ka TcoSeV ttj t OTEjI6W aUTOO KCnCt O IOJl

5) To uVoe toD elpOlllPciY)luw ampeov VIi Elva l TO UAUXtcr10V 270~ WOTE 6rav tODTO elVQl middot~ElOT6v va jln unEPXE1AitlO TaI uttO tol1 130aTOC oihe KUTa 111V apxtK Jjv IlIUOlV KAELOiJlQTOe t o )1OI) UIIO TnV ttpoD n69 Eolv 6n 6 xPOVoe KAElOljlQTOe toO OUPOl(lpli(patoe OCr Elval )lEyuAunpOC t(i)v 3

6)AjlEOW PErt TO 9upOlppaYIlU oeov va rrpo pAetpSfj f] lOKCt vn nPE~t10eW PX 9 Y10) 11 ~elooOle TOO (jIVOUe TOO 6va ~a9 )100 auvtx IOle ltje OIWPUYOt jleuro n[noc 720 Jl tnl ~t1K OUe 1625 jI KUt ltp 6SABIV Ie rUvup~Oytje jlilKOUt 1625 jl ~euro nAutOe euroIe Titv apxTl V 720 jl Kui sie T6 IFAOe 50 ~1 KUI KUta )1tjKO~ KAio lV 1tU9lJEVOt 98 (Lxmiddot [[ - 12)

Eie 01 ItEpiltTWOLV npo Tljl1181j il KamOKwJj iEKavlle JjPE)li) shyaeroe 6TE Jj po il poundvT6e Tile EV ouvExei_~ OtWpOYOt Elval l inv IKovonotllHKrl TO UVoe toD Ucent(ttOe EVtOe TaOtTle )1~ KliOIV nUSIl~vOC 100 00 npohUyenE tft to~eroe T(UV 150 jl ampui 1I0POxitV 30 ~$OA Kui WI eK TOUlQU OEOV va lponOrrOlT)90Dv ta(f) pwr to CJXt01U Ttje ME H tTlt Tfl e auopuyoe ue 6crov HEUSEPOV vwoe ttje TnIEWe tOOV 0 15jl Mv ElvUI Kuru Til yvdraquo)1nv )1UC 6PKETOV

Env Uvn8Ef6le npotljlTle fl 11 e rEpu IUOIlt OTE EvtO TTl ~ ev crlVExeilt atoopUYOe 6n~LOUpYOOVTQ eurovtova O~UatOIlPOLIlEV a KUjlOTU OUOEJ-lIU Tpo1torroiT)O le T1)e MEfeurotTl C arrUITEiTftt Ka O aaov tlleuro lPilOTlouv paS n uSatoe EIC lO 6 jloioojla ltje tUIEOgtC teurolv 005 )1 01lU01 125 11 Ete tilv rrpuYjlO1tK6Tl1TU

7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 11: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

159 M6pTlo~ 1970

EK t (j)v poundc nJEaOElcrwv CPEUVWV IIPobcu~uv to KclTWOI au~nEmiddot paa~nfO

I) H Yo)OAnjlia tii~ n ap ulCulJ1ttn piou L l(OpuYO e ltDuYfi e1vCll ouvot6v va itgtuYJl~tJJtOlnOij Jl E pound01 il ouo CrVoiYPOTa tWV 7 50~ K1(1 Hi IU lIC IV Kat V 6vaA6y~av sIva1 OUVUTOV vj oqalUJl EV orcf(IiJ~W HV 1 oD 60no t vtO~ T~e UqgtlcrfUJltvl1e JiIWPU iOC tP OY1l KUI nAloiov TOi) YEpyou Yo)QAllViue Ttje N Eue t fl e TU~tr T al~ 0)0 Jl (~S ev u~oly)1a) n tJlleu)1oD~EV OUOEJliav U1t lOPUIVW01V (Jleuro ouo avoiY ~I UTU)

ETEPOV ~EIOVpound KTnJla Ttje IOOElJJI v (~t iv CiVOly~a ) dVal on lOr e TL V(1 a lJllOi(1 Ku piooe tl~ nlv apl OTEpUV nupeuroUlv nre LUVapJlo ytjc Ka tnt 11l1KOI TtjC ta~EWe TU)V 4 0 Jl T6 jow p n poaK pouEI Eltl TlOV OO KOOV Ti)~ o potptjr n po~ TOUTO oui TnV 1tEpi1tlOKlIV WUTTjV ItPOTEivEiUl 01lWC )1E)e i1l9f1 poundTrIKUAUjlle Tile tUVU PjlOy tjC aVEU 00K(8v

Kut 010 tae OUO cigtc 60100 )OOlOl e 1V Kal V (Kcd KupiwC o la Tli v IOatV V) 01001 va ATltpBlj ElOIKt IIPOO(( OiC) trv ~owtE pIKil v 1tapEIO V TfI~ ruvap~lo YTic Kal loiooe Etc T1lV apXi] v KUS aaov ttllt tpUiVETUL EK lOD 6)10161JlaTOe de Tilv Beatv TOUTTlV OTl jlIOU()shyyoOvtal AlaV ujlni~ai T01UTTltEe Kui anoK6UT)0le Tfie tpAeuro~6e emo ltj e na pelUe TI) e rlVUp~ortje

n aV HO e Ern tqgtapjlOoS () il rv il fl V AlXJLe opoundov yo TpOttOshy1toLn9j fl 6pmpJj Ttje rUVUpjlOyi)~ waTE t6 60wp va jlil npooshyKPOUl] eie OUOeuroVU aTl)l Eiov TalHnc (1 V Male) ti va npOaKpOU1] E1ti TOO AuXlmou 0l(11O0 jlJjtWUe CV AUa l)

2) bullH Kurn )l ~J(ot K ime iOi) KAElO lOD A y(r)yo D amptov va )lEt(J)shyet ano 15 Elt 1) WOTe 0 ltueJlil v poundIe TnV apxilv l OOTOU 010 KUteuroST] QTa 020 )1 nep inou jlt tnaK6AoJaov uUT)aLV KaTa 020 jl Tofl 6vofklSjlOi) Elt tTl elaooov lTie rUVQPjlOY~ Toino cup pound016 DEAtl6lvE I tTl V poilv KQtCL Til v Eioooov euroIr Tilv nQpaKu~1tnlPIO v atWpuYQ KUt Ctep poundTEPOU KQoplf36~el Tilv neusepuv poundJ1ltp6 veurotav toi) OOQTOr WaTe TO(ho v6 ~il ttpOashyKpC0~ tl i o oootv aT)IlEIOVhi Tf e 6 potptje KUla TTl VAUOl I V

3) H leKOvl) rPWl0EWt n eoptOlCO)leuroVl 6~faoor KUTCtvln lOG ntpat~ toO KAElaT oi) A-(wyoi) oEOv vel eKpa8uv8 t1 KUla 050 jl ltEplnOl

n e fiS n EVEtptpe Tl KQi npOnYOUjlEvUX ui OT))lIOVPYOUjlEVQl emshytp1VHaKut aVOOjlQAlal Eie til v ltlpxilv toO n middottEup IJ(oD ump1e ly

oHH OD )lEIOOVTUl )l eTa TTlV TpOrrOnOLlOl V WUTTl V oi08T)two

4) T6 Jlit K0t TOU nl_wplKOU onEPXELALOtOU OEOV 016 uU~llSi1

O_QtpP~ waTE va o rpoyyuffU90(W Ta lhcpu alHol) np6~ linoshytpu~r v O l poj3 l f la)lWV OitlvE~ blpO)llato1tOloi)vlO ~t lilv OIUshyra tv ti) MeAL1IK

ErcioTle f] crTpoundVIC QUTOO O~ov vu lOnoSe TT)Sij poundIe UIVO)l ETPOV 20-1- 00 ~IU E S wat orav TO Elup6ltpputJlQ poundIV ai OVOI KTOV fl EAEU9europu poundnHpOVEIo ToD uOUtae ele t li v StOIV TOU ttAeuroUP IlCOi) UJt EpxE1Ala1OU 016 nupoXTl v 30 11 3 0 va EOp[OK ETa t Ka TcoSeV ttj t OTEjI6W aUTOO KCnCt O IOJl

5) To uVoe toD elpOlllPciY)luw ampeov VIi Elva l TO UAUXtcr10V 270~ WOTE 6rav tODTO elVQl middot~ElOT6v va jln unEPXE1AitlO TaI uttO tol1 130aTOC oihe KUTa 111V apxtK Jjv IlIUOlV KAELOiJlQTOe t o )1OI) UIIO TnV ttpoD n69 Eolv 6n 6 xPOVoe KAElOljlQTOe toO OUPOl(lpli(patoe OCr Elval )lEyuAunpOC t(i)v 3

6)AjlEOW PErt TO 9upOlppaYIlU oeov va rrpo pAetpSfj f] lOKCt vn nPE~t10eW PX 9 Y10) 11 ~elooOle TOO (jIVOUe TOO 6va ~a9 )100 auvtx IOle ltje OIWPUYOt jleuro n[noc 720 Jl tnl ~t1K OUe 1625 jI KUt ltp 6SABIV Ie rUvup~Oytje jlilKOUt 1625 jl ~euro nAutOe euroIe Titv apxTl V 720 jl Kui sie T6 IFAOe 50 ~1 KUI KUta )1tjKO~ KAio lV 1tU9lJEVOt 98 (Lxmiddot [[ - 12)

Eie 01 ItEpiltTWOLV npo Tljl1181j il KamOKwJj iEKavlle JjPE)li) shyaeroe 6TE Jj po il poundvT6e Tile EV ouvExei_~ OtWpOYOt Elval l inv IKovonotllHKrl TO UVoe toD Ucent(ttOe EVtOe TaOtTle )1~ KliOIV nUSIl~vOC 100 00 npohUyenE tft to~eroe T(UV 150 jl ampui 1I0POxitV 30 ~$OA Kui WI eK TOUlQU OEOV va lponOrrOlT)90Dv ta(f) pwr to CJXt01U Ttje ME H tTlt Tfl e auopuyoe ue 6crov HEUSEPOV vwoe ttje TnIEWe tOOV 0 15jl Mv ElvUI Kuru Til yvdraquo)1nv )1UC 6PKETOV

Env Uvn8Ef6le npotljlTle fl 11 e rEpu IUOIlt OTE EvtO TTl ~ ev crlVExeilt atoopUYOe 6n~LOUpYOOVTQ eurovtova O~UatOIlPOLIlEV a KUjlOTU OUOEJ-lIU Tpo1torroiT)O le T1)e MEfeurotTl C arrUITEiTftt Ka O aaov tlleuro lPilOTlouv paS n uSatoe EIC lO 6 jloioojla ltje tUIEOgtC teurolv 005 )1 01lU01 125 11 Ete tilv rrpuYjlO1tK6Tl1TU

7) Ele TTlV t v ouvExeiQ 016lPlmiddot(U jlE KaTQ )1tjKoe Ki lol v lIu9)1poundshyvoc 776 00 to ~aeOC tOO UOOToe Od TitV jlEYlo tnV no poxll v T(UV 30 Jl 3 0A npopoundKulVE VOOOv tfl~ MEHTnc OT) aor 100 )1

8) T6 SnSo~ TOO UOQTOe eurovT6e T1) ~ npoooyooyoi)npo~TIlv A middot vapPlS)1I Otwll v a elajlEvilv Taupoo1tol) a ciJpUYOe ElVUI Ttje Ta~EOX roov 200 ~ j OltUOn oOOv tTie MEAeurolnCmiddot

EmjAknwv ttje EPEOVTlt rauTnc eurox )l epoo Ifle ateu9uvOEUlC KumaKEuGlv TOll Yltoupyeiou a11J-lOOi o) ~ Epywv lito 0 MllshyxavIKOe K tWCtvVle Moopuitle

A model study of the tail race by-pass channel

of the T ayropos hydro plant BV Demokrltos A Komia

Summary

I he model study has been SpvnsLt ted by th e construc tion div is ion or th e Ministry of Pu b lic oVorks on d li as oip n p t J rollT l~d in the I-lyd aulics Lahoratory or the Technical Unlers ily of Athmi

Thi inle t of Lhe by -pass channeJ is loca ted imm ed iatel ) ups tream or the fi r drop sLru (lurp of Lhe e)(i~ Lin g tail

rate ctannel The by-pass channel has a closed spction with an in ilia l width or 750 m adj us ted donstr13am to 500 Ill

The power pl~n t di schargf is 30 ma se c T he now may b e easily dirclt d e ither 10 th e bYPi)S ch ~l lIlI 1 or Lo the initial Iai l rJ(p dlanne l

The model (j al~ o r I he bymiddot pass t-hannel was 1 25 CO Il CIelf

bull Burll in (wrtl Hi ~ l)PH C( in Civ il ~llll npp rl n -ll bull Hlnd T o 11- raul Works IUJ yl IIal (11111 111111 w illi III jod Imiddot LT ItT 1 fli Cai lnh r r~ i t )middot f~ 1 hlll5 HIM SPtmiddot II II 1 d hI II r tl lllUlh () r~ i ll PlmiddotI t tlIlIVS irn pJImiddotIutl J ly(h lul1l H T ti a) in I h 1-1~ dttull ( a nd In lt od ti n lITII III l h( JI ) dnl Ii 1 lllI lmiddotI1orie In ft aly (i t shy La hrlln uf D J t 1illh lt TH ml I1 l IIHliu t y v f A 111laquo0 1 IIlY IIlllll ~ 111 1 -mlf lca P~Htki paled III many CO nlf ~ IJIInlt in Hyet middot fllIlli cltI li o IT-- ~ild bHI t h lr lullII or 1 (

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated

Page 12: library.tee.grlibrary.tee.gr/digital/techr/1970/techr_1970_3_525_149.pdf · 149 "EpEuva Eni oIJ01c:,lJaTOC; Tile; napaKalJnTl1piou ~1c:,pUYOC; CPuYilC; TOU 'Y~POI1AEKTPIKOU ITa&IJOU

160 T[XVLKU XPOVI)CO M6pTloC 1970

plexigb ss and plas ler of luIis were used ti co nstruction materials in the modeL

The l es tr performrrl on the mOdel rewaled the followi ng ch ~uact otjs ti cs and cO ll d ulions

1) The inlak~ or the by-pilS5 channel IlIny consist of Ont) or two 0pcll l ngB With one ope nin~ 11 wnl( r lIurfnce supershyeieltion of tho order of 0)0 rl ex is t in [onl of the intakB On Ihe Ion side of tho transition from tilt intake to the main p ari of the hy -pnsil cila nnel lhe wntor nils tho cross sec tion cOlnpleltgt I~

Wi tll two openings til( superelevnlion rllfllinishes Splriai care s hould be Laken in tho design of the loft s ide of Ihe intake l rarl sit ian Lo avoid savaralion which was exh ibi ted in the modol tests

~ ) T hrmiddot lon~illldin fl l channe l 10)0 ill tlt e closed sec tion part of tho by-pas~ clwnn ol shQII d bo rl ~ dIl Cfc1 rrOln 15 to 1310 )0 that the invert ot tho inle t can be lowered

about 020 m Thus th e wal r r surface is lowered and LhQ dosod sndion may perform atlequatclly as a free su rface channel

3) Thu s lilling baiJl 1 the 1~ lI d of th e cl osed ~ccti o n or th e hy -poss channel s hould be made 050 m deepe r

t) TI H sirl tl ehln nP1 wpir should be leng thened a nd the end corn ol$ s holiid he well rounded to avo id large ~ cale liisturbanccs In L1U1 flow

The cres t vf tho wl~ir should be )t + 2040 m iI) Lh nL whr n thv gu trl is open the water surf cu will be aboul 010 IJolow tho wii cres t

5) Th l] ga ll heig-Ill s hould be at least 20 m to avoid now over tlH gate

6) Downstream of the gaff in the lail race channel a stilling basin should be anticipated