Fish pass facility and method with fish ladder and navigation lock combined

Abstract

The invention discloses a fish pass facility and method with a fish ladder and a navigation lock combined, and relates to a facility and method for migratory fishes to move upstream through a barrage building. The fish pass facility comprises a fish luring ladder with the inlet end arranged in the downstream river channel of a dam, wherein the fish luring ladder is a slope type channel which is internally provided with a low weir, the slope type channel inclines in the upstream direction and extends in the direction of the lock chamber of the navigation lock as a whole, the outlet end of the fish luring ladder is connected with a fish collecting pond which is connected with a transfer pond through a connecting channel, branch water diversion pipes are arranged in the transfer pond, the transfer pond is partitioned by a transverse partition wall into a main transfer pond and an auxiliary transfer pond, a lower gate is arranged in the transverse partition wall, a water flowing channel is formed in the side wall of the lock chamber of the navigation lock and is communicated with the transfer pond and the lock chamber of the navigation lock, and an upper gate is installed on the water flowing channel. According to the fish pass facility and method with the fish ladder and the navigation lock combined, the fish ladder and the navigation lock are combined, the upper end of the fish ladder is arranged in the lock chamber of the navigation lock, the influences caused by the upstream and downstream water head are overcome through the navigation lock, and therefore migratory fish shoals can pass through the dam; the length of the project of the fish ladder can be obviously reduced, and therefore input cost is reduced.

Description

technical field [0001] The invention relates to the fields of water conservancy engineering and environmental protection engineering, and specifically refers to a new means for solving the problem of migratory fish going up through river-blocking structures. Background technique [0002] In order to meet the needs of production and life in flood control, power generation, shipping, water supply, etc., it is necessary to build dams on natural river channels. The barrage dam often blocks the migration passages of native migratory and semi-migratory fish in the natural river. Under the current circumstances, the remedial measures adopted at home and abroad are mainly three types: one is to build fish passing facilities, mainly including fishways, fish locks, fish lifts, and fishing boats; the other is to build artificial simulation facilities in the river. The third is to carry out artificial breeding and release in the upstream waters of the barrage dam. [0003] Existing fi...

AI Technical Summary

Problems solved by technology

On the other hand, in order to meet the mooring force requirements of ships berthing, the water flow rate is also limited when the lock chamber is filled and discharged.

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