Fish collecting device suitable for established hydropower station, and fish collecting method

Abstract

The invention discloses a fish collecting device suitable for an established hydropower station. The fish collecting device comprises a tail water access door groove formed in a tail water tower or atail water platform, and a fish collecting box arranged in the tail water tower or the tail water platform; a lifting mechanism is arranged at the top end of the tail water access door groove, and a lowering guide rail is arranged in the tail water tower or the tail water platform; the two ends of the fish collecting box are connected with the lowering guide rail, and the fish collecting box is arranged on the inner side or the outer side of a tail water pipe / a tail water tunnel; and a fish inlet is formed in the fish collecting box and faces the outer side of the tail water pipe / the tail water tunnel. The fish collecting device has the advantages that implementation is easy, investment is less, the fish collecting efficiency is high, and fishes are protected better. The invention furtherdiscloses a fish collecting method of the fish collecting device suitable for the established hydropower station.

Description

technical field [0001] The invention relates to the technical fields of water conservancy engineering and environmental protection engineering, more specifically, it is a fish collecting device suitable for existing hydropower stations. The invention also relates to a fish collecting method suitable for a fish collecting device of an existing hydropower station. Background technique [0002] According to statistics, as of 2012, there were 98,002 reservoirs and 46,758 hydropower stations distributed in my country. While these water conservancy and hydropower projects play their benefits in flood control, power generation, and shipping, they also have a non-negligible impact on the ecological environment, especially on fish. Barrier effects of migratory channels. Compared with so many dams, as of now, my country has built less than 100 fish facilities, and the problem of blocking fish migration channels within the watershed is still very significant. At present, my country ha...

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Problems solved by technology

[0007] 1) It is extremely difficult to arrange and construct fish passing buildings by adding fishways, imitating natural passages, fish lifters, fish collection and transportation systems, etc., which are difficult to implement and costly, and may affect the function of the hub;

[0008] 2) Even if the fish passing facilities can be added, it is very difficult to arrange the inlet at the best fish collection position, and the fish luring flow is small, and the fish luring effect is limited. Most of the fish will still gather near the tail water of the factory building. The efficiency of collecting fish is low;

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