Protection system for fish habitat at water-reduction stream segment of hydropower station

Abstract

The invention discloses a protection system for the fish habitat at the water-reduction stream segment of a hydropower station, and belongs to the technical field of hydraulic and hydropower engineering. The protection system comprises a watercourse, a power generation plant, a main diversion tunnel, ecological flow generator sets and a dam. The dam and the power generation plant are located on the upstream and the downstream of the watercourse respectively, the power generation plant is communicated with the upstream of the dam through the main diversion tunnel, the corresponding ecological flow generator sets are arranged on the upstream section of the watercourse and the downstream side of the dam, and the corresponding ecological flow generator set is arranged at the upstream end of the main diversion tunnel and communicated with the diversion tunnel through a branch tunnel. Multiple ecological fish passing dams are arranged at the watercourse water-reduction stream segment of the dam. According to the technical scheme, the ecological fish passing dams are arranged at the water-reduction stream segment of hydraulic and hydropower engineering, the fish habitat where deep water and shallow water stream segments are alternated, and no obstruction exists in the vertical direction is created, and the adverse effects on the fish habitat by the watercourse water area and water depth at the water-reduction stream segment of the hydraulic and hydropower engineering are effectively and substantially reduced.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and relates to environmental protection in water conservancy and hydropower engineering, in particular to a fish habitat protection system for water reduction river sections of hydropower stations. Background technique [0002] The environmental protection of the water-reducing river section downstream of the hydropower project dam is one of the most important environmental problems in its construction and operation. According to the environmental protection needs of the water-reducing river section, the environmental protection administrative department generally proposes to release ecological flow The ecological flow is the amount of water needed to maintain the dynamic stability of the biological communities and habitats of the water-reduced river section formed by the hydropower project, as well as the healthy and sustainable development of the river. Amon...

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Problems solved by technology

[0003] Since there is still a large gap between the ecological flow discharged by the water conservancy and hydropower projects and the original natural channel flow of the water-reduced river section, even after the measures to discharge the ecological flow are taken, the water area and water depth of the original natural river channel of the water-reduced river section will still be greatly reduced. As a result, the habitats of fish in most water conservancy and hydropower projects are still greatly affected by the reduction of water in the river, and the ecological environment protection problem in the water reduction river has not been effectively alleviated.

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