Multi-level drive-assisted ecological fishway facility and its operation method

Abstract

The invention discloses a multistage assisted-driving type ecological fishway facility and an operation method of the facility, relates to the field of fish passing buildings and water conservancy and hydropower engineering ecological environments, and discloses a fishway building and fish passing control method suitable for key water control projects with middle and high water heads. The multistage assisted-driving type ecological fishway facility comprises a plurality of stages of fishway units which are distributed in a step mode, a fishway assisted-driving system, a bionic river system, a fishway energy dissipation system and a fish luring monitoring system. When the fishway facility operates, the fishway facility is used in cooperation with a computer automatic control system, and the aim of fish-class step-by-step intelligent assisted-driving upstream sailing is achieved. The fishway facility and the operation method of the fishway facility have the advantage that the facility can assist fishes in passing through the key water control projects with the middle and high water heads to run and sail upstream, and consumed physical ability is small, and the fishway facility is ingenious in design, high in automation degree, capable of greatly improving the fish passing effect of the fishway, and beneficial to natural fishery resource protection, and guarantees continuity and diversity of a river aquatic ecosystem.

Description

technical field [0001] The invention belongs to the field of fish migration ability, fish passing facilities and ecological environment of water conservancy and hydropower projects, and in particular relates to a multi-stage drive-assisted ecological fishway facility and an operating method thereof. Background technique [0002] In rivers all over the world, people have built a large number of water conservancy and hydropower projects for flood control, power generation, irrigation, shipping and water supply. A series of changes in circulation and information transmission, which will change the habitat conditions and hydrological regimes required by the fish living in it, and ultimately affect fish resources, such as migration or other activities of fish may be delayed or terminated , the damage suffered by fish when they pass through the dam structure or turbine, and the ecological landscape is broken. These impacts will lead to changes in the ecological environment of riv...

AI Technical Summary

Problems solved by technology

The impact of dam construction on the river ecosystem is also becoming more and more serious. The operation of the fishway of the medium and high head water conservancy projects is affected by the upstream water level and flow, and the flow velocity and flow state are unstable. The traditional fishway is generally It is only suitable for low-head water conservancy projects with a dam height below 20-25m, and the process of fish going up requires a lot of energy

Although fish gates, fish lifts and other fish passing facilities have been used in medium and high head water conservancy projects, because the operation mode of fish gates and fish lifts is too different from the natural migration mode, the fish luring effect is not ideal, and it is still difficult to meet the requirements. The requirement of passing fish through high dams urgently requires a new type of fishway that can be applied to high dams to make up for the impact on the survival of migratory fish caused by human construction of barrage structures

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