1 i. water supply networks and facilities topic i.4. river water intakes: kinds and structures water...

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I. Water Supply Networks and Facilities

Topic I.4. River Water Intakes: Kinds and Structures

Water Intake Kinds

General classification:

I. According to the location in respect to the river Bank’s - at the river bank ( at the middle and

low river reaches) Stream’s - at the river stream Mountainous - at the upper river reaches

II. According to the capacity Small - less than 1 m3/s Average - 1 - 6 m3/s Big - more than 6 m3/s

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Topic I.4. River Water Intakes: Kind and Structure

III. According to the lay-out With separate arrangement of the receiving chamber and the pumping

station With combined arrangement of the receiving chamber and the pumping

station

Water Intakes Structures

General requirement: Intake allocation - only at concave bank

and suitable hydrological and geological

conditions

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Bank’s Water Intakes Structures

Separate type

(scheme)1 - receiving well

2 - pumping station

3 - receiving chamber

4 - storage (suction) chamber

5 - suction pipes

6 - mesh screen

7 - inlets

8 - bar rack

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Combined type

(scheme)a - option with foundation on rock

б - option with foundation on rock or on other ground and with horizontal pump

b - option with foundation on rock or on other ground and with vertical pump



3 - pumping station

4 - horizontal pump

5 - vertical pump

6 - vertical pump shaft

7 - electric motor

8 - pressurised pipe

9 - suction pipe

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Combined type

(real object lay-out)1 - receiving chamber


3 - pumping station

4 - service premise

5 - inlets

6 - sluice (for sluice gates)

7 - revolving mash

8 - electric motor

9 - pumps

10 - pressurised pipes

11 - back-washing pipes

12 - sediments withdrawing pipes

13 - sludge pumps

14 - stairs

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Stream’s Water Intakes Structures

Combined type

(scheme)1 - water intake head 3 - receiving well (with two chambers)

2 - gravity feeding pipe 4 - pumping station

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Separate type

(scheme)1 - water intake head

2 - gravity feeding pipe

3 - intake well

4 - pumping station

5 - back-washing pipe


7 - orifices with racks

8 - separation wall

9 - service office

10 - pumps

11 - distribution chamber

12 - suction pipes

13 - pressurised pipes

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Water intakes heads

(submergible filtering type)a - simplified construction

б, b, г - radial water inlet

1 - filter layer

2 - gravity feeding pipe

3 - concrete case

4 - receiving chamber (space)

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Water intake head

(non-submergible type)1 - gravity feeding gallery

2 - water intake orifices

3 - bar racks

4 - service premise

5 - service platform

6 - ejector

7 - stairs

8 - sluice gates

9 - caisson cutting edge (steel)

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Mountainous Water Intakes Structures

a - plane 1 - dam 4 - drain outlet

б - cross section Б - Б 2 - bar rack 5 - weir

b - cross section A -A 3 - grit chamber

1 i. water supply networks and facilities topic i.4. river water intakes: kinds and structures water...

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