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Ecological fish passing facility

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

Active Publication Date: 2020-01-10
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • 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 vertical shaft is arranged on the inner layer near the side of the dam body in the closed area of ​​the hoisting channel, and the bottom of the vertical shaft is connected with the upstream water area through a communication channel to maintain a high water level in the vertical 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, v...

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Abstract

The invention discloses an ecological fish passing facility. A lifting channel is arranged at the position, near a dam shoulder, on the land side of a barrage body, the lifting channel uses the barrage body as a main body to build barriers on the two sides, fish trapping equipment is arranged in a semi-closed region defined in the barriers on the two sides, a closed shaft is arranged on the innerlayer of the side, close to the barrage body, in a closed area of the lifting channel, and a high water level is maintained in the shaft. A slide rail system is installed in an outer-side shaft wall far away from the barrage body, when a fish pond is lifted to the top of the shaft, and water is discharged from the fish pond to the upstream of the barrage body through a drainage mechanism. When theproper buoyancy volume is designed and the buoyancy of a floating body is calculated to be close to the overall gravity, small lifting driving force is needed for realizing driving, the effect of small power driving can be achieved, the structure of the ecological fish passing facility is simple and reliable, and circulated and efficient fish passing can be achieved.

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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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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