Fish passing facility for rivers

Abstract

The invention discloses a fish passing facility beneficial for collecting upstream fish and used for rivers. The fish passing facility used for the rivers is mainly formed by a fish blocking railing,a fish collecting channel and a fish collecting box. By means of the fish blocking railing, under the circumstance of not influencing overflowing, the upstream fish are blocked, and forced to swim into the fish collecting channel from a fish inlet of the fish collecting channel. Due to the fact that a fish input structure with the inlet end size larger than the outlet end size is arranged in the fish collecting channel, once the upstream fish penetrate through the fish input structure, the upstream fish cannot escape from the fish collecting channel easily, the upstream fish continuing to swimupstream can flow out from a fish outlet of the fish collecting channel and then enter the fish collecting box from the conical fish inlet of the fish collecting box, the conical fish inlet can ensure that the upstream fish cannot escape from the fish collecting box easily, the upstream fish collected in the fish collecting box can be transferred to a river water area of the upstream of a water junction through personnel or a transferring system, thus gene exchange of upstream and downstream fish is promoted, and the river aquatic ecosystem is protected to the maximum degree.

Description

technical field [0001] The invention relates to a fish passing facility, in particular to a fish passing facility for streams. Background technique [0002] Fish passing facilities are one of the important measures to satisfy fish migration and promote fish gene exchange upstream and downstream of the dam site. At present, major water conservancy projects are required to be equipped with fish passing facilities to help fish pass through dams. Compared with large rivers and rivers, the species diversity of aquatic ecosystems in stream waters is lower, the ecosystem is more fragile, and the significance of protection is more important. Because although the water conservancy projects built on the big rivers have blocked the river connectivity, fish can still find suitable habitats in the waters between the water conservancy projects, for example: the water area at the end of the reservoir of the power station; and the design of the water conservancy projects of the big rivers ...

AI Technical Summary

Problems solved by technology

However, the existing fish-passing facilities are either not suitable for setting in stream waters with shallow water depth and small flow, or are not conducive to collecting upward-tracking fish, and the fish-passing effect is mediocre

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