Tunnel type multi-exit imitation natural fishway

Abstract

The invention belongs to the fields of hydraulic engineering and environmental protection engineering, and relates to a tunnel-type multi-exit imitation natural fishway. The main body of the fishway connects the downstream riverbed and the waters of the upstream reservoir. The main body of the fishway is set inside the mountain next to the power plant; the inlet of the main fishway is set on the downstream riverbed of the power plant, and the outlet of the main fishway is set in the power station. In the upstream reservoir of the factory building; there are no less than two fishway exits; any fishway exit is located at different elevations. The invention can not only adapt to the geographical conditions of narrow riverbed, high and steep mountains on both sides of the river, and the restrictive conditions that the water level of the upstream reservoir drops sharply or the water level of the fish passes through a large variation, but also overcomes the large amount of fishway construction and the high difficulty of design and construction. , the disadvantage of high cost, and minimize the impact on the terrestrial animals and plants on the mountains on both sides of the river.

Description

technical field [0001] The invention belongs to the fields of water conservancy engineering and environmental protection engineering, and relates to a tunnel-type multi-exit imitation natural fishway. Background technique [0002] Migration is the periodic directional back and forth movement of fish due to the influence of physiological requirements, genetics and external environmental factors. Migration is a characteristic formed during the phylogenetic process of fish, and it is a long-term adaptation of fish to the environment, which can enable the population to obtain more favorable living conditions and reproduce better. Nowadays, in order to obtain water energy, human beings build dams on natural rivers, which block the migration channels of fish and seriously damage the natural ecological environment in the rivers. In order to remedy the damage caused to the river, human beings designed and built various fish passing facilities when building barrage dams to help migr...

AI Technical Summary

Problems solved by technology

[0007] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a tunnel-type multi-exit imitation natural fishway, which can not only adapt to the geographical conditions of narrow riverbeds and high and steep mountains on both sides of the riverway, but also overcome the large amount of fishway construction work, The design and construction are difficult and expensive, and it can minimize the impact on the terrestrial animals and plants on the mountains on both sides of the river. More importantly, it can realize that even when the water level of the upstream reservoir rises and falls sharply, the fishway can provide Conditions for adapting to fish ascending

Images