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Ravine stream type fishway

A fishway and flow technology, applied in water conservancy projects, sea area projects, climate change adaptation, etc., can solve problems such as poor results and achieve the effect of less land occupation

Inactive Publication Date: 2018-06-22
CHINA THREE GORGES PROJECTS DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the fish enter the fishway, under the stimulation of the current, they can only pass through the fishway as soon as possible or stay in the rest pool for a short time. At present, the vertical seam fishway has been built, and the initial effect is acceptable, but the effect is not good after a long time

Method used

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  • Ravine stream type fishway
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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0028] Such as figure 1 with figure 2 As shown in Fig. 1, a stream-type fishway imitates mountain streams, making the habitat of the fishway closer to the natural conditions. The stream-type fishway mainly includes gravel bed bottom 1, gabion embankment, recreational pipe, water flow regulating stone 7, rest pool 8, seepage-proof shell 6 and foundation 9. First gabion banks 2 are respectively arranged on the left and right sides of the bottom of the gravel bed 1, second gabion banks 3 are respectively arranged on the first gabion banks 2 on the left and right sides, and the first gabion banks 2 on the left and right sides The distance between the fishways and the fish passing space between them is smaller than the fish passing space distance between the second gabion banks 3 on the left and right sides. ...

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Abstract

The invention discloses a ravine stream type fishway comprising a gravel bed bottom. The left side and the right side of the gravel bed bottom are each provided with a first gabion bank. The first gabion banks on the left side and the right side are each provided with a second gabion bank. The fish passing space distance between the first gabion banks on the left side and the right side is smallerthan that between the second gabion banks on the left side and the right side. The ravine stream type fishway can meet requirements of different fishs, meanwhile a rest and playing place is provided,the water-permeable gravel bed bottom and the gabion banks can improve microhabitat and provide corresponding bait, the ravine stream type fishway is little influenced by the environment, and the occupied space is small.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a stream-type fishway related to environmental science and aquatic fishery. Background technique [0002] When blocking rivers and building dams, in order to protect the ecological balance of river fish, it is necessary to take measures to build fish-passing buildings or other fish-protecting measures to properly solve the problem of migratory fish crossing the dam. The types of fish-passing structures mainly include fishways, fish locks, fish lifts, and fishing boats. According to the requirements of current environmental protection documents in my country, the fish passing facilities of water conservancy and hydropower projects can be used in a single form or in different combinations. The general requirements for the selection of fish-passing facilities are as follows: those with small water level differences can adopt the form of imitatin...

Claims

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Application Information

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IPC IPC(8): E02B8/08
CPCY02A40/60E02B8/08E02B8/085
Inventor 樊启祥王小明杨少荣朱冬舟何伟成必新薛敬阳刘欢
Owner CHINA THREE GORGES PROJECTS DEV CO LTD
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