large dams - ul fgg
TRANSCRIPT
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 1
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Large DamsDesign, Construction and Performance
Gerald ZenzGraz - University of Technology
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Design
Dam Structures & Geotechnique
Construction / Observation
Operation / Monitoring
Improving / Upgrading
Cooperation &
Transfer of
Know How
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 2
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Large Dams – Design, Construction, Operation and Rehabilitation
Gravity DamsSystem of Load TransferDesign IssuesSliding Stability
Example – HEPP Birecik – Fill and Gravity Dam StructureDouble Curved Arch Dams
Bearing BehaviourDesign AspectsAbutment Stability
Example – Schlegeis Dam / AustriaExample – HEPP Tzankov Kamak / BulgariaExample – HEPP Ermenek / Turkey
Pumped Storage Scheme – Limberg II / Pressure TunnelRehabilitation – Bottom Outlet of Salza Dam
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Gravity Type - Dam Structures
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 3
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Loading CasesDead Weight
Water Loading, Uplift
Temperature
Silt pressure
Ice Loading
Wind and Wave
Earthquake Loading
Operating Earthquake OBE
Maximum Credible Earthquake
Structural Alterations
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Design Control Measures
Failure ModeSliding in any plane in the Abutment –-In the interface concrete to Rock -In any possible joint-In fault system in the Rock-Tensile- and Compression
Usability – System Performance-Layout-Material Parameters-Permeability
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 4
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Uplift Pressure Distribution
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Earthquake Loading
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 5
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Required Safety Margin
⎟⎟⎠
⎞⎜⎜⎝
⎛⋅+=
nbn
JCSJRCσ
ϕστ 10logtan
φb = 29,5 °Residual Friction Angle / Laboratory
JRC = 8,3Comparison Publication / Field
JCS = 27,2MPaLaboratory MeasurementsCorrelation with Schmidt Hammer
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Const. Cons.
Selected Hydro Power Plants in Turkey
Under Oper.
BorckaMuratli
Deriner
Birecik KarkamisErmenek
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 6
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Hydro Schemes at the Euphrat
Birecik first large BOT – Project in TurkeyStart of Construction April 1996 – Construction Time 66 MonthRiver Diversion – June 1999Start of Impounding – October 2000Commercial Operation Since Oct. 2001
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Hydro Electric Powerplant - Birecik
Fill Dam (2000m)– Clay Core– Height 62,5m
Concrete Dam (500m)– Gravity Dam– Intake Structure – Power House
6x112MW FrancisDesign Discharge 6x317m3/s ~ 1900m3/s
– Spillway10 Sections 12,5m17500m3/sec Design Flood
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 7
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Dam Cross Section
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Dammquerschnitt
– Sliding Stability– Earthquake Safety
Soil Liquefaction– Seepage Analysis
Rapid Drawdown
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 8
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Excavation – Spillway - Intake
Geotechnical Investigations-Site Mapping-Drilling Campaign
-Laboratory & In Situ - Tests-Geophysical Investigation
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Joint System – Clay Filled
φclay = 22,4 °Clay Friction Angle / Laboratory
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 9
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Spillway - Section
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Intake Section
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 10
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Additional Excavation – Spillway - Intake
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Additional Excavation
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Operation - Monitoring of Performance
HPP – BirecikDesign Flow 1900m3/sHydraulic Head 44mCapacity 672MW6 Francis UnitsAnnual Production 2500GWhEntire Length 2510mReservoir Volume 1200Mio m3
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Operation – Monitoring Performance
Geodetic MeasurementsSeepage / UpliftDisplacements – Plump Line / Extensometers / Joint MetersOperation – Reservoir Water Level / Downstream Water Level / Temperatures
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 12
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Uplift Pressure Measurements
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Radial Deformation Measurements - Intake
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Arch Dam – Bearing Behavior
Uplift
Foundation
Seepage
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Schlegeis Dam
Crest length 725mHeight 131m
Thickness 34m / 9m
Total Concrete Volume 960000m3
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 14
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Dam Excavation
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Method of Construction
Individual Columns– Maximum Height
Difference– Placing Temperature– Joint Grouting
Monolithic Arch Structure– Loading Conditions
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 15
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Method Dependent Results
Influence – Mesh Size – Deformation Behavior
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Situation at Central Cross Section
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Finite Element Cross Section – Abutment Forces
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Forces Along the abutment
Dead Weight Dead Weight & Water Load
Dead Weight & Water Load & Uplift
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 17
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Abutment – Block Sliding Analysis
Resultant ForcesVerticalHorizontal
Sliding Safety
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Dynamic Analyses
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 18
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
• Measured Eigenfrequenciesand Mode Shapes
Water Level7m below crest
Measured Calculated1,92 1,812,05 1,862,50 2,38
DYNAMIC BEHAVIOUR
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
1782 müA; Stauziel
b H
z
1655.82 müA
Added Mass – Versus – Fluid Structure Interaction
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 19
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Added Mass – Versus - FSI
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Abutment Stability
Failure ModeSliding in any plane in the Abutment –-In the interface concrete to Rock -In any possible joint / fault system in the RockCompression / Tension
Usability – System Performance-Layout-Material Parameters-Permeability / Uplift Water Pressure
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 20
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Arch Dam Behavior – ICOLD Benchmark
measurements providedlinear + nonlinear benchmarkICOLD – Dam Analysis
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 21
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
http://nwhttp://nw--ialad.uibk.ac.atialad.uibk.ac.at
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Double Curved Arch DamArch Dam Height 125 mCrest Length 457 mConcrete Volume 529.000 m³
Reservoir: Max. Flood Level 687.30 mMax. Op. Level 685.00 m Min. Op. Level 670.00 mTotal Storage Volume 111 Mio.m³Active Storage Volume 41 Mio.m³
Tsankov Kamak - Dam Concreting under Progress
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 22
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Bottom Outlet2 steel pipes through DamLength 37 mDiameter 1.3 mClosing Device: 2 slide gatesSpillway4 Dam Crest Overflow Sections Radial Gates 4x 8.0/8.0 mStilling Basin 106/66 mCapacity 1500 m³/s
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Geotechnical Investigations
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 23
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Abutment Forces
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Horizontal - Geological Section
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Grout- and Drainage Curtain
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Model for Dam Abutment Stability Calculation
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Conservative Model - Keyblock Analysis
Water Pressure
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 26
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Temperature Distribution – End of Construction
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Earthquake Excitation
MCE - 0,41g for 10000year return period
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 27
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Model of Structure and Water
Nonlinear Dynamic Analysis– Joint at the Abutment– Block Joints – Construction Joints
Implicit Direct Time Integration– Massless Rock– Reservoir Modeled– FSI – analysis– Acceleration time history
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Nonlinear Dynamic Analyses
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 28
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
August – 2008Quality Assurance
– During Execution of Construction– Rock Abutment (Geological Monitoring)– Concrete Production / Surface / Core– Grouting – Temperature Distribution
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
August – 2008
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 29
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
August – 2008
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
HPP Ermenek – Arch Dam Design and Construction
Concrete Volume: 289.000 m3
Dam Height: 218 mCrest Length: 120 mDam Thickness: Crest 7m
Base 25m
Reservoir Volume: 4600 Mio m3
Gross Height: 361 mCapacity: 300 MWAnnual Production: 1014 GWhInvestment: 540 Mio Eur
Presentation - Ljubljana
TUG - Institute of Hydraulic Engineering and Water Resources Management 30
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Double curvedArch 218m
Power House300 MW1,000 GWh
Pressure Tunnel Length 8km Diameter 5.6m
Grout Curtain682.000m2
Erik Diversion Pressure Tunnel
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Pressure Tunnel
Tunnel Boring Maschine
Excav. Diameter 6,7m
GeologyLimestoneKarstFlyshWater intrusion
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Tunnel - Durchschlag
Ausbruchsfortschritt
Max. Tagesleistung62m/Tag
Max.Monatsleistung1004m / Monat
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Tunnel Durchschlag
8100m Gesamtlänge
Beginn26th July 2003
Durchschlag2nd April 2005
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Power Station
ErmenekNQ ~15m3/sMQ ~43m3/s
Power House
Switch Yard
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Switcht Yard
StabilityDesign – Reliefe Wells
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Valve Chamber – Surge Tank
Ermenek Pressure Tunnel
Erik Pressure Tunnel
Ermenek SurgeTank
Erik Power Cavern
Erik Surge Tank
Power Cavern Access Tunnel
Inclined PressureShaft
Access Tunnel
Valve Chamber
Surge Tank Access Tunnel
Vertical PressureShaft
Pressure Tunnel8,1km
Inclined Shaft1km
Surge TankDiameter 10m Height ~135m
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Erik Diversion – Ermenek Surge Tank
Erik Addit
Surge Tank - Ermenek
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Dam Construction Site - Downstream
Dam – Left Abutment
Galleries GL2 / GL3
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Canyon
Depth 200m
Broad – 10 bis 25m
Vertical partlySteep valley
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Gorge
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Ermenek - Double Curved Arch Dam
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Abutment Forces – Block
Winter and Summer loading condition
Direction and Magnitude are calculated
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
adiabatic conditions
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
0 10 20 30 40 50
time [d]
conc
rete
tem
pera
ture
[°C
]analysis resultstheoretic value
343 kJ/kgHydration heat H
2450 kg/m³Weight density ρ
210 kg/m³Cement content z
11.2 kJ/(m•h•K) = 268.8 kJ/(m•d•K)Conductivity k
0.92 kJ/(kg•K)Specific heat c
CE,FA
Hydration Heat Development
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Concrete Temperature Distribution
End of Construction April 2010
Concrete Temperature 17°C
Partial impounding requires postcooling
Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Instrumentation – Main Dam – Cross Section
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Instrumentation – Main Dam – Horizontal Cross Section
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Rock Abutment – Right Bank
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
How a Geologist Sees the Right Bank
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Detailed Investigation at Right Abutment
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Abutment Stability
Possible Sliding PlanesRJ5e and RJ5g
RJ5g (320/80)φi = 37° + f(JRC)cmin = 0,2MPa
⎟⎟⎠
⎞⎜⎜⎝
⎛⋅+=
nbn
JCSJRCσ
ϕστ 10logtan
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Rj5e 354/68
El 695
El 685
Second Blasting
First Blasting
Rj5g 320/80
285/65Rj5a285/65
RJ3
a 64
/80
G24
G20Dam FootPrint
USDS
Cave
Dam Excavation Right Bank - D/S Key Blocks
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
D
E
S
I
G
N
EXECUTION
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Limited Working area at the berms
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Anchor drilling from the basket
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Adaptation of Appropriate Blasting
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Blasting Result
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Measurement During Execution
Observational Method
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Dam Concreting under Progress
Grout CurtainHydraulic Head23bar
Drainage Curtain
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Status of Work
September – 2008
Presentation - Ljubljana
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Institute of Hydraulic Engineering and Water Resources Management
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
Status of Work
Elevation about 540m a.s.l
Start of Impounding – at ~610m a.s.l
Partial Impounding
Initial Large Increase in HydraulicHead
– Grouting of Block Joints
– Temperature Distribution
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Ljubljana – November - 2008Dam – Design, Construction & Performance – G.Zenz
http://www.ltbd09.tugraz.at