I. Water Supply Networks and Facilities Topic I.4. River Water Intakes: Kinds and Structures

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I. Water Supply Networks and FacilitiesTopic
I.4. River Water Intakes Kinds and Structures

• Water Intake Kinds
• General classification
• 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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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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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 pump
• 1 - 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 station
• 5 - 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