Fish migration channel with energy dissipation structure

Abstract

The invention belongs to the technical field of water conservancy and hydropower engineering and environmental protection, and discloses a fish migration channel which mainly comprises an upstream fish channel opening, a fish passing channel, a downstream fish channel opening and a rest pool, and the fish passing channel is formed by combining and connecting a plurality of separated main-loop basic units. According to the fish migration channel disclosed by the invention, the loop is separated from the main path by utilizing the structural design of separating the main-loop basic unit, and the purpose of dissipating energy of the main path is realized by virtue of the loop; meanwhile, the structure enables the main path to form a plurality of flow velocity areas, and a rest area and an upstream area are provided for fish migration. The influence of various buildings on the original river ecology in the water conservancy project is weakened, a harmonious water ecological environment can be established, the energy dissipation effect is good, the fluid speed in the fish migration channel is remarkably reduced, and the upstream energy consumption and migration difficulty of fishes are reduced. Meanwhile, the structure does not need to manually control a channel switch, has the characteristic of simple structure, and is convenient for construction and later operation and maintenance.

Description

technical field [0001] The invention relates to the technical field of water conservancy, in particular to a novel fish migration channel structure with an energy dissipation structure. Background technique [0002] Hydropower is an important source of clean electricity in my country. At present, the hydropower resources of major rivers in my country have been fully developed. However, the corresponding ecological problems are also increasingly prominent. Among the many ecological problems caused by hydropower projects, the obstruction of fish migration is a typical aquatic ecological problem. The hydraulic structures constructed in hydropower projects not only obstruct the river course, but also hinder the reproduction and reproduction of migratory fish, and may even lead to the extinction of some species of fish, seriously endangering the diversity of biological species. [0003] Fishway is the abbreviation of fish migration channel. Its function is to assist migratory f...

AI Technical Summary

Problems solved by technology

The combined fishway takes advantage of some of the hydraulic characteristics of different fishways, but it has problems such as complex structure and difficult design

However, the energy dissipation effect of the traditional fishway is poor, and there is a problem that the flow velocity at the key position of the fish migration in the flow channel is high, which makes it difficult for the fish to migrate

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