A fish collection station for river migratory fish

Abstract

The invention provides a fish collection station for migratory fish in rivers, which improves the fish collection efficiency of migratory fish in rivers and solves the problem of migratory fish crossing dams in high dam projects in alpine and canyon areas. The fish-collecting station is composed of an induced net wall, a fish-collecting platform, and a transport channel, and the constriction port at the upstream end of the net wall is connected with the fish-collecting box of the fish-collecting platform. The fish collection platform is divided into a fish collection layer and a fish unloading layer. The fish collection box is located below the water surface; the fish collection box is divided into upper and lower parts. There is water at the bottom of the fish collection box during lifting and transshipment, which provides conditions for the normal survival of fish. The fish unloading layer is built above the water surface of the fish unloading platform, and the fish collecting box is lifted, lowered, replaced, and unloaded through the hoist installed above the fish unloading platform. The fish collecting box is unloaded and sorted in the fish unloading layer. The fish unloading platform is connected with the transportation channel to realize the transfer of target fish across the dam.

Description

technical field [0001] The invention relates to the construction technology of a fish collection station for river migratory fish. Background technique [0002] Hydropower is a clean energy with many advantages such as renewable, pollution-free, low operating cost, and convenient for power peak regulation. Play an important role in the national economy and people's livelihood. Due to the cascade construction of river water conservancy and hydropower projects, the vertical connection of rivers is blocked, and the continuity of upstream and downstream water bodies is blocked in geographical space, which has a great impact on the biological process of migratory fish. At home and abroad, the method of building migratory channels is often used in order to reduce the negative impact of industrial facilities on migratory fish. According to data analysis, fishways at home and abroad have not achieved the desired effect; The larger the size, the higher the requirements for the geog...

AI Technical Summary

Problems solved by technology

Artificial trapping facilities such as fish collection boxes, fish collection boats, etc., have been reported in China, but no specific implementation has been seen, and the effect is still unclear. In addition, the downstream of large-scale water conservancy and hydropower projects often has turbulent water flow (water flow speed can reach 7m / s ), complex flow regimes, drastic changes in river bank and river bottom topography, and numerous rock formations, these objective factors have caused great difficulties in the construction and safe operation of fish collection facilities

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