Comprehensive arrangement of combining tunnel-type nature-like fishway with fish lock and application method thereof

Abstract

The invention discloses a comprehensive arrangement of combining a tunnel-type nature-like fishway with a fish lock and an application method thereof. Downstream beds and upstream reservoir water areas are connected through a fishway main body and the fish lock; the fishway main body is arranged in mountains beside powerhouses and comprises side walls, a bottom board and a top arch; a plurality of contraction sections are arranged in the fishway main body to separate the fishway main body into a plurality of fishway pond chambers; and the fish lock is sequentially provided with a fish lock downstream working gate, a movable fish driving device, a stilling basin, a fish lock upstream working gate and a stoplog gate from the downstream side. The comprehensive arrangement disclosed by the invention can be adapted to large and rapid changes of upstream water levels of reservoirs and narrow landforms of beds and has the advantages that fishes are guided to pass according to the different upstream water levels; appropriate water temperature, flow and flow velocity are provided for fish migration; the natural aquatic environments of rivers can be simulated; the excavation volume and the engineering design and the construction difficulties are reduced; and the construction cost is reduced while the fish passing effect is guaranteed at the same time.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering and environmental protection engineering, and relates to a comprehensive layout of a tunnel-type imitation-natural fishway combined with a fish gate for migratory fish to go up through a river-blocking structure, and also relates to the benefits of the tunnel-type imitation-natural fishway combination The comprehensive arrangement of fish locks is used to assist migratory fish to cross the dam, and it is to solve the technical problem of migratory fish going up and back to cross the dam. Background technique [0002] Building dams on natural rivers has blocked the migration channels of fish. At home and abroad, it is generally remedied by building fish passages and other fish passing facilities. As my country's hydropower construction is increasingly advancing to the upper reaches of rivers, the construction of hubs in mountainous rivers often encounters terrains with narrow riverbeds ...

AI Technical Summary

Problems solved by technology

However, due to the large fluctuations in the water level of fish passing upstream in some projects, it is difficult for ordinary fishway outlet layout schemes to adapt to such large water level fluctuations; It takes a lot of time for the school to swim upstream in the main body of the fishway

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