Fish passing system for high dam of canyon reach

Abstract

The invention discloses a fish passing system for a high dam of a canyon reach. The fish passing system comprises a fish collection pond, an upper fish lift and a lower fish lift, wherein the upper fish lift and the lower fish lift are arranged on the upstream river channel shore side and the downstream river channel shore side of a dam body respectively, the upper fish lift is installed at the top of the dam body through an upper steel supporting frame, an upper steel cable A and an upper steel cable B are arranged at the two ends of the upper fish lift respectively, an upper fish collection tank A is arranged on the upper steel cable A, and an upper fish collection tank B is arranged on the upper steel cable B; the two ends of the lower fish lift are installed on a fish lift platform respectively through a lower steel supporting frame, one end of the lower fish lift is connected with the upper steel cable A, the other end of the lower fish lift is connected with the fish collection pond through a lower steel cable, and a lower fish collection tank is installed on the lower steel cable. The fish lifts are arranged at the upstream and downstream positions of the dam body of the dam, fishes lured into the fish collection pond at the downstream position of the dam are driven to the fish collection tanks and then lifted and conveyed to a reservoir at the upstream position of the dam, and therefore the purposes of fish passing through the upstream and downstream positions of a dam site and fish gene exchange are realized.

Description

technical field [0001] The invention relates to a fish passing system for a high dam in a canyon section, and belongs to the technical field of water conservancy and hydropower engineering environmental protection. Background technique [0002] The barriers of fish communication channels and fish gene exchange in the upstream and downstream of the dam site involved in the development of water conservancy and hydropower projects are environmental problems that need to be solved urgently in construction and operation. fish and the degree of impact, put forward the requirements for the construction, operation and related research of fish passing facilities upstream and downstream of the dam site, such as fish passages, fish locks, fish lifts, fish collection and transportation systems and other fish passing and guiding measures, in order to realize regional , The sustainable and healthy development of the ecological environment of the river basin. [0003] At present, the fish...

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Problems solved by technology

[0003] At present, the fish passing technology and related research and development of low water conservancy and hydropower projects are relatively mature, and there are many application examples, but the problem of fish passing in high water head dams has always been a worldwide technical problem. The core problem has not been studied and solved, especially the problem of fish passing in high-head dams in canyon areas, which is restricted by engineering layout conditions, and the situation is particularly severe

However, the main restrictive factor and characteristic parameter of the fishway is the water head. The above-mentioned fishway facilities are mainly suitable for dams with low water head, especially imitating natural fishways. Different engineering types and topography and geology have influence on the site layout conditions and fish elevation of fishways. larger

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