8/10/2019 1Water Supply4

1/10

1

I. Water Supply Networks and Facilities

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

Water Intake Kinds

General classif ication:

I. According to the location in respect to the river

Banks- at the river bank ( at the middle and

low river reaches)

Streams- 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

8/10/2019 1Water Supply4

2/10

8/10/2019 1Water Supply4

3/10

3

Banks 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

8/10/2019 1Water Supply4

4/10

4

Banks Water Intakes Structures

Combined type

(scheme)

a - option with foundation on rock

- 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 pump1 - receiving chamber

2 - storage (suction) chamber

3 - pumping station

4 - horizontal pump

5 - vertical pump

6 - vertical pump shaft

7 - electric motor

8 - pressurised pipe

9 - suction pipe

8/10/2019 1Water Supply4

5/10

5

Banks Water Intakes Structures

Combined type

(real object lay-out)

1 - receiving chamber

2 - storage (suction) 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

8/10/2019 1Water Supply4

6/10

6

Streams Water Intakes Structures

Combined type

(scheme)

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

2 - gravity feeding pipe 4 - pumping station

8/10/2019 1Water Supply4

7/10

7

Streams Water Intakes Structures

Separate type(scheme)

1 - water intake head

2 - gravity feeding pipe

3 - intake well

4 - pumping station5 - back-washing pipe

6 - receiving chamber

7 - orifices with racks

8 - separation wall

9 - service office

10 - pumps

11 - distribution chamber

12 - suction pipes

13 - pressurised pipes

8/10/2019 1Water Supply4

8/10

8

Streams Water Intakes Structures

Water intakes heads

(submergible filtering type)

a - simplified construction

,b, - radial water inlet

1 - filter layer

2 - gravity feeding pipe

3 - concrete case

4 - receiving chamber (space)

8/10/2019 1Water Supply4

9/10

9

Streams Water Intakes Structures

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)

8/10/2019 1Water Supply4

10/10

10

Mountainous Water Intakes Structures

a - plane 1 - dam 4 - drain outlet

- cross section - 2 - bar rack 5 - weir

b - cross section A -A 3 - grit chamber