Fish blocking lifting equipment and method for tunnel type imitating natural fishway

Abstract

The invention discloses a novel tunnel-type fish blocking and lifting device imitating a natural fishway, and relates to a fish-passing facility used to solve the problem of migrating fish going up through a river-blocking structure. Including: the inlet and inlet section of the fishway connecting the downstream riverbed; the tunnel connecting the inlet section and the outlet section; the outlet and the outlet section of the fishway connecting the upstream reservoir; the fish trapping and fish transfer system including the fish arresting grid and the lifting and transferring equipment. In the water conservancy and hydropower hubs in the high mountains and valleys, the tunnel-type fish arresting and lifting equipment imitating the natural fishway is used, which can adapt to the large changes in the water level of the reservoir and the narrow terrain of the riverbed, provide the water temperature, flow and flow rate suitable for fish migration, and can Simulate the natural aquatic environment of the river, greatly reduce the amount of excavation, and will not form artificial high and steep slopes. At the same time, the tunnel-type imitation natural fishway occupies less surface area, which reduces the soil erosion caused by open cut and has less impact on the ecological environment of terrestrial plants and animals.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering and environmental protection engineering, and relates to a fish-passing facility for migratory fish to go up through a river-blocking structure, more specifically, a new type of tunnel-type fish-blocking lifting device imitating a natural fishway and the method it uses. 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 r...

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