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Ecological Fishing Facilities

A fish-passing facility and ecological technology, applied in the ecological environment field of water conservancy and hydropower projects, can solve the problems of small power demand, high operation and maintenance costs, and high construction costs, and achieve the effect of small power drive and water level assurance.

Active Publication Date: 2021-07-27
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the deficiencies and problems existing in various fishway systems at present, especially for the problems of complex equipment structure, high construction cost and high operation and maintenance cost in the existing fishway fishway, and provides a structure suitable for high dams Ecological fish passing facilities with simplification, low power requirements and low construction and maintenance costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: adopt a kind of ecological fish passing facility, such as figure 1 with figure 2 In the example, a hoisting passage 3 is provided near the abutment 2 on the backwater side of the barrage 1. The hoisting passage takes the dam body as the main body to establish barriers on both sides, which can be built with the dam body or independently of the outside of the dam body. The lifting channel is used to complete the purpose of assisting the upward tracing of fish, and the fish backtracking is realized through the flood discharge channel or water discharge channel in the dam body. Set fish luring equipment in the semi-enclosed area enclosed by the walls on both sides or form fish luring water flow through continuous water supply. It is usually designed to make the water level of the shallow water in the semi-enclosed area higher than the water level of the water area downstream of the dam body, so as to form a fishway inlet flow from the semi-enclosed area to t...

Embodiment 2

[0046] Embodiment 2: On the basis of Embodiment 1, the way to maintain the water level in the shaft is different. In this embodiment, water is injected into the shaft through a water pump to maintain a high water level in the shaft. In this embodiment, the communication channel 11 may not be provided, and the water pump pumps the upstream water into the shaft.

Embodiment 3

[0047] Embodiment 3: adopt another kind of ecological fish passing facility, such as figure 1 with figure 2 A lifting channel is provided near the abutment on the backwater side of the barrage. The lifting channel takes the dam body as the main body to build barriers on both sides, and fish luring equipment is set in the semi-enclosed area surrounded by the barriers on both sides.

[0048] A closed shaft is arranged on the inner layer of the closed area of ​​the hoisting channel near the dam body. The bottom of the shaft communicates with the upstream waters through a communication channel to maintain a high water level in the shaft. valve.

[0049]A slide rail system is set in the outer shaft wall of the vertical shaft away from the dam body. The slide rail system is provided with a closed traversing chamber 51 inside the shaft wall, and the traversing chamber 51 is matched with a lateral sliding plate 52 . At the same time, vertical track grooves 53 are provided at corres...

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Abstract

The invention discloses an ecological fish passing facility. A lifting passage is arranged on the backwater side of the barrage dam near the dam abutment. The lifting passage takes the dam body as the main body to establish barriers on both sides, and the barriers on both sides are set in a semi-enclosed area. Fish luring equipment, a closed vertical shaft is installed on the inner layer of the closed area of ​​the lifting channel close to the dam body to maintain a high water level in the vertical shaft; a slide rail system is installed on the outer wall of the vertical shaft away from the dam body, when the fish pond is lifted to the vertical shaft At the top, the fish pond is released to the upstream of the dam body by a water release mechanism. When the present invention designs a suitable volume of the floating body and calculates that the buoyancy of the floating body is close to the overall gravity, it only needs a small lifting driving force to realize the driving, so that the effect of small power driving can be realized. Its structure is simple and reliable, and it can realize efficient circulation. fish.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering ecological environment, and in particular relates to an ecological fish passing facility applied to barrages. Background technique [0002] For the needs of flood control, power generation and navigation, projects often build water-retaining structures in rivers and rivers, which has brought a series of negative effects on aquatic ecosystems, including negative effects on natural fish populations, such as blocking rivers Damming can block or delay fish migration, cause habitat loss or change, and lead to fish decline or even extinction. Therefore, reasonable fish passing facilities should be built while building the dam to ensure the continuation of migratory fish. [0003] The migration of fish is a movement of changing habitats with a certain direction, a certain distance and a certain time. This movement is usually clustered, regular, periodic, and heredit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B8/08
CPCE02B8/085Y02A40/60
Inventor 郭文献王鸿翔
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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