Multi-level overlapping arc fishway and fish passing method

Abstract

The invention discloses a multi-stage superimposed arc type fish passage and a fish passing method and belongs to the field of ecological environment of fish passing buildings and hydraulic and hydroelectric engineering. The multi-stage superimposed arc type fish passage comprises a plurality of stages of fish passage units, a fish passage two-wing wall and a control system, wherein bottom plates and gates of the fish passage units are arc-shaped panels to form a superimposed arc type structure; foldable plates in the fish passage units can tend to be straight along the opening process of the gates and can cooperate with the gates to form water flow condition beneficial for upstream movement of the fishes. Compared with the conventional fish passage, the length of the fish passage can be reduced; the water flow condition of the fish passage can be adjusted; the fish passage is high in intelligent level, is applied to fish passing of dams with different water heads, is also applied to fishes with different swimming capabilities, and is capable of effectively protecting fish resources and maintaining the diversity of river ecosystems.

Description

Technical field [0001] The invention relates to the field of fish passing buildings and water conservancy and hydropower engineering ecological environment, in particular to a multi-stage stacked arc fish pass and a fish passing method. Background technique [0002] In rivers around the world, people have built a large number of water conservancy and hydropower projects for flood control, power generation, irrigation, shipping, and water supply. Dams raise water levels and block rivers, resulting in an open and continuous system of natural rivers in the flow of energy and material. A series of changes in circulation and information transmission have caused changes in the habitat conditions and hydrological conditions required for the survival of the fishes living in them, and ultimately have an impact on fish resources. In order to protect natural fishery resources and ensure the continuity and diversity of aquatic ecosystems, the main restoration measures currently taken are to ...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the problem of too long fishway and high cost when the existing fishway technology is used in water control projects with medium and high water heads, at the same time, reduce the requirements of traditional fishway on fish flow ability and continuous jumping ability, improve The effect of passing fish in fishways, protecting natural fishery resources, and ensuring the continuity and diversity of aquatic ecosystems, the invention provides a multi-level overlapping arc fishway and a method for passing fish

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