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Structure for constructing ecological fish and water passing passage by using branches

A water ecological and tributary technology, applied in construction, water conservancy engineering, sea area engineering, etc., can solve problems such as difficult implementation of fish collection operations

Pending Publication Date: 2017-10-03
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fish collection and transportation system involves the assistance of professional facilities such as fish collection and transportation boats, and the manufacture and operation of these facilities have certain limitations, and for the downstream is a canyon river, due to the rapid water flow and narrow river surface, the fish collection operation is not easy implement

Method used

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  • Structure for constructing ecological fish and water passing passage by using branches
  • Structure for constructing ecological fish and water passing passage by using branches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, including the downstream channel 3 downstream of the dam 2, the downstream channel 3 is provided with a downstream tributary 4, and the downstream tributary 4 is connected to the reservoir area 1 through the connecting channel 6, and the junction of the connecting channel 6 and the reservoir area 1 is provided with a trap The fish system 7 and the fish luring system 7 can directly adopt the structure of the traditional fish luring system in the prior art. During specific implementation, the dam is chosen as close to the upstream of the downstream tributary 4 as possible. The starting end of the connecting channel 6 is located on the downstream tributary 4, and the terminal section is located at the end of the reservoir area 1. The elevation of the terminal end is higher than that of the starting end, and the slope of the connecting channel is about 1%. The connecting passage adopts an open channel, and partitions are arranged in the open c...

Embodiment 2

[0024] Such as figure 2 As shown, it includes the reservoir tributary 5 upstream of the dam 2 and the downstream tributary 4 downstream of the dam 2 . The tributaries 5 in the reservoir area and the downstream tributaries 4 are located on the same side of the dam 2, and their directions are roughly similar or intersect as much as possible. A connecting channel 6 is set between two tributaries, and the connecting channel 6 adopts the form of imitating a natural river or fishway. The elevation of the connecting channel 6 connected to the tributary 5 of the reservoir area is higher than the end connected to the downstream tributary 4, and the gradient of the connecting channel 6 is not more than 2%. The downstream channel 3 of the dam 2 is a natural river section, and the fish in the downstream channel 3 can reach the reservoir area 1 smoothly along the downstream tributary 4 and the connecting channel 6 .

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Abstract

The invention discloses a structure for constructing an ecological fish and water passing passage by using branches. The structure comprises a reservoir area (1) and a downstream river channel (3) separated by a dam (2); a downstream branch (4) is distributed on the downstream river channel (3); and a communicating channel (6) is arranged between the reservoir area (1) or a reservoir area branch (5) of the reservoir area (1) and the downstream branch (4). With the structure, the ecological fish and water passing passage is constructed by using the branches, the water conservancy and hydropower pivotal project is not affected, the requirement for upstream and downstream communication of fishes can be met, and the structure is particularly applicable to a high-head water conservancy and hydropower project. The structure has the positive effects on reducing the influence of the water conservancy and hydropower project on fish migration and promoting ecological protection of rivers.

Description

technical field [0001] The invention relates to a structure for constructing fish and water ecological channels by using tributaries, and belongs to the technical field of fish protection. Background technique [0002] The construction of barrages and dams cut off the natural rivers to varying degrees, blocking the migration of fish and resulting in a sharp decline in the population of migratory fish. In order to protect migratory fish, while building dams and dikes, various countries have built various types of fish passing facilities according to the characteristics of the project and the needs of fish protection, such as fishways, imitation natural passages, fish collection systems, elevators, etc. Fish machines and fish gates are used to help anadromous fish go up. [0003] Fishways are mostly used in low dams, and often need to be combined with large dams, which have a great impact on engineering layout, and some dam types such as arch dams cannot be laid out due ...

Claims

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Application Information

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IPC IPC(8): E02B8/08
CPCE02B8/08E02B8/085Y02A40/60
Inventor 徐海洋陈国柱孙显春唐忠波夏豪王孙高
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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