Fishway system beneficial to stable and smooth migration of fishes

Abstract

The invention discloses a fishway system beneficial to stable and smooth migration of fishes. The fishway system beneficial to stable and smooth migration of the fishes comprises a fishway bottom plate, a pair of fishway outer wing walls and a plurality of migration auxiliary units, wherein each migration auxiliary unit comprises a fixing plate, a limiting plate, a sliding plate and a movable baffle, wherein the fixing plate is in an inverted L shape; the limiting plate is located on the downstream part of the fixing plate, and the limiting plate is provided with a vertical sliding way which is concaved inwards from the top surface; the sliding plate is vertically matched in the sliding way of the limiting plate, the upper end of the sliding plate protrudes out of the top surface of the limiting plate, the top surface of the sliding plate is fixedly connected with one end of a pull rope, and the other end of the pull rope is vertically upwards connected to a winch and is fixed on the fishway outer wing walls; the movable baffle is formed by hinging one side of a horizontal plate and one side of a vertical plate which are hinged to each other, the other side of the horizontal plate is hinged to the sliding plate, and the side edge of the lower part of the vertical plate is hinged to the upper side edge of the fixing plate. The fishway system beneficial to stable and smooth migration of the fishes has the advantages of being simple in structure, convenient to operate and observe, good in fish migration stability and high in effect.

Description

technical field [0001] The invention relates to the technical field of fish-passing buildings. More specifically, the present invention relates to a fishway system that facilitates stable and smooth migration of fish. Background technique [0002] Water conservancy projects such as sluices and dams set up on rivers have brought huge economic and social benefits to human beings, but at the same time, they have also destroyed the original connectivity of rivers, blocked the migration channels of fish, and had a negative impact on fish resources, biodiversity and ecology. The system had a very adverse effect. At present, setting up fishways for fish migration is the most effective means of maintaining fish resources, but the existing fishway system is not perfect, such as how to maintain different passages and areas for different fish when migrating, and how to maintain the upstream water level. How to control the height of the water inlet of the fishway in the case of a larg...

AI Technical Summary

Problems solved by technology

At present, setting up fishways for fish migration is the most effective means of maintaining fish resources, but the existing fishway system is not perfect, such as how to maintain different passages and areas for different fish when migrating, and how to maintain the upstream water level. How to control the height of the water inlet of the fishway in the case of a large change, how to maintain the stability of the fishway in response to changes in water flow, and how to drive and help migratory fish to a certain extent, all these need to be considered comprehensively In order to design a fishway system that is more conducive to the stable and smooth migration of fish

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