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    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

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    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

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    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

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    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

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    Streams 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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    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

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    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)

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    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)

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    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