Experimental device for attracting fish and replenishing water at fishway inlet of hydropower station

Abstract

The invention relates to an experimental device for attracting fish and replenishing water at a fishway inlet of a hydropower station, which belongs to the field of water conservancy project facilities. The device comprises a fish attraction retaining wall, a flow control grid formed by two pore plates, an energy dissipation section, two water outlets, two fishway inlets, three fishway retaining walls, an isolation net, two control gates and other components. The control on water flow and flow velocity is realized through adjusting relative positions of the two pore plates of the flow control grid; a fishway inlet is arranged between every two adjacent fishway retaining walls; the control gates are arranged between the water outlets and the fishway inlets. The experimental device can control the water flow and the flow velocity at the fishway inlet, is high efficient and affordable, and integrates attracting fish and replenishing water effects into a whole, is simple in structure, convenient to operate, reliable and stable, and low in cost, and is remarkable in fish attracting effect through adding an attracting fish and replenishing water flow at the fishway inlets to form a fish attracting water flow so as to attract the fish to enter the fishway, and is suitable for being promoted and used in water conservancy projects.

Description

technical field [0001] The invention relates to a fishway experiment device of a hydropower station, in particular to an experimental device for luring fish and replenishing water at the fishway inlet of a hydropower station, which can control the water flow and velocity at the entrance of the fishway, and integrates the effect of luring fish and replenishing water, and belongs to water conservancy engineering facilities field. Background technique [0002] In water conservancy projects, fish passing facilities are artificially constructed passages and facilities for the purpose of allowing fish to pass through their obstacles smoothly. As a kind of fish passing facility, fishway is an artificial tank for fish to pass through gates and dams when fish migrate. The main structural components of the fishway include: the entrance section, the tank body section, the exit section and auxiliary facilities. Today's fishways are mainly divided into three types: flat fishways; verti...

AI Technical Summary

Problems solved by technology

Due to the lack of understanding of fish life habits and migration rules, etc., the importance of fishway entrance layout is ignored; it is difficult or even impossible for fish to enter the fishway, and the fish luring effect is poor. Quickly discovering and accurately entering the fishway inlet is one of the key factors in fishway design

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