In a barrage, the crest level is kept

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BPSC AE Paper 6 (Civil) 11 Nov 2022 Official Paper
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  1. high with large gates
  2. high with no gates
  3. low with no gates
  4. low with large gates

Answer (Detailed Solution Below)

Option 4 : low with large gates
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Concept:

Barrage is a structure similar to weir with the only difference that the crest is kept at a low level and ponding of water is accomplished mainly by means of gates. During floods these gates can be raised above HFL and thus enable the high flood to pass with minimum afflux.

F2 N.M Madhu 10.04.20 D3

F2 N.M Madhu 10.04.20 D4

Regulator are located just u/s of a barrage in order to regulate the discharge flowing into off-taking channel and to control the entry of sediment in the channel.

F2 N.M Madhu 10.04.20 D5

Escape is a structure constructed on an irrigation channel for the disposal of surplus water from the channel. It is also known as surplus water escape or canal surplus escape. These are also called the safety valves of an irrigation channel system.

F2 N.M Madhu 10.04.20 D6

 

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