| 摘要 |
A pivotal canal gate, mounted in a predetermined size canal, opens and closes by a controllable weight movable in response to a float-switch mechanism for maintaining a predetermined level in the downstream side of the gate in the canal; water passing under the gate is directed into a dead-water pool breaking up the velocity of the flowing water, providing a control pool for maintaining a constant head over a discharge weir providing a predetermined quantity of water into the downstream canal.
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