Slit type fishway experimental device with stages of falling sills and grooves

Abstract

The invention relates to a slit type fishway experimental device with a plurality of stages of falling sills and grooves. The device mainly comprises a water inlet system connected with a water circulation system, a water retaining system connected with the water inlet system, and a water outlet system connected with the water retaining system. A water flow flows into the water inlet system through a ground water tank of the water circulation system, flows into a water tank of the water retaining system through a water flow buffer tank in the water inlet system, flows from a tail pond in the water inlet system into an underground pond through the water tank, and flows back into the ground water tank of the water circulation system through a draft tube.The water flow of the ground water tank is controlled by an upstream manual control valve, and the water flow of the tail pond is controlled by a downstream manual control valve. The device provided by the invention adopts the water circulation system, can recycle experimental water and reduces an experimental water volume and cost; three stages of falling sills are in fit with grooves so as to relatively more equally distribute energy dissipation to each energy dissipation part, improve the energy dissipation efficiency and reduce the degree of disorder of the water flow; and in a controllable range of the water flow, the flow rate and flow regime of the water flow are relatively closer to natural conditions, so a fish putting experiment meets actual conditions.

Description

technical field [0001] The invention relates to research on hydraulic turbulent flow energy dissipation technology, fish swimming ability, fish migration and fish passing facilities, and in particular to a multi-stage sill groove vertical slot type fishway experiment demonstration device. Background technique [0002] Fish-passing facilities refer to artificially constructed passages and facilities for fish to pass through obstacles. The earliest fish-passing facilities were natural obstacles such as digging reefs in river channels and dredging rapids to communicate fish migration routes. [0003] According to incomplete statistics: the United States and Canada have built more than 200 various fish buildings, most of which are fishways, and about 100 in Europe, about 35 in Japan, and about 15 in the former Soviet Union. The more famous fishways in the world include the Bonneville Dam fishway in the United States, the Guimen Gorge fishway in Canada, and the Tong Grande Dam fi...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to design a new type of multi-stage drop sill groove vertical seam that can study the problems of hydraulic turbulence energy dissipation, fish migration and hydraulic experiments in view of the problems existing in the existing fish passing facilities. Type fishway experiment demonstration device

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