Layout structure and usage method of tunnel type imitation natural fishway combined with fish lock

Abstract

The invention discloses an arrangement structure of a tunnel type imitating a natural fishway combined with a fish gate and its use method; the main body of the fishway and the fish gate are connected to the downstream riverbed and the water area of ​​the upstream reservoir, and the main body of the fishway is arranged inside the mountain next to the power station building. The fishway main body is composed of a side wall, a bottom plate and a top arch; a plurality of contraction sections are arranged in the fishway main body to divide the fishway main body into a plurality of fishway pond chambers. From the downstream side of the fish gate, a downstream working gate of the fish gate, a mobile fish catching device, a stilling pool, an upstream working gate of the fish gate and a stacking beam gate are sequentially arranged. The invention can adapt to the large and rapid changes of the upstream water level of the reservoir and the narrow terrain of the riverbed, pass fish according to the difference of the upstream water level, provide the water temperature, flow and velocity suitable for fish migration, simulate the natural aquatic environment of the river, and reduce the amount of excavation And engineering design, construction difficulty, to ensure the fish passing effect while reducing the project cost.

Description

technical field [0001] The invention belongs to the fields of water conservancy engineering and environmental protection engineering, and relates to an arrangement structure of a tunnel type imitating natural fishway combined with a fish gate for solving the problem of migratory fish going up through river blocking structures, and also relates to the benefits of the tunnel type imitating natural fishway combination The layout structure of the fish gate is used to assist the migratory fish to pass the dam, and it is to solve the technical problem of the migratory fish going up and back to cross the dam. Background technique [0002] Building dams on natural rivers has blocked the migration channels of fish. At home and abroad, it is generally remedied by building fish passages and other fish passing facilities. As my country's hydropower construction is increasingly advancing to the upper reaches of rivers, the construction of hubs in mountainous rivers often encounters terra...

AI Technical Summary

Problems solved by technology

However, due to the large fluctuations in the water level of fish passing upstream in some projects, it is difficult for ordinary fishway outlet layout schemes to adapt to such large water level fluctuations; It takes a lot of time for the school to swim upstream in the main body of the fishway

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