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Fish passageway and fish passageway building method for low-waterhead dam

A fish passage, low water head technology, applied in construction, hydropower, water conservancy projects, etc., to reduce construction difficulty and save costs

Inactive Publication Date: 2013-01-30
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no successful case in our country for the construction of fish passages in dams that have been built but have not been built.

Method used

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  • Fish passageway and fish passageway building method for low-waterhead dam
  • Fish passageway and fish passageway building method for low-waterhead dam
  • Fish passageway and fish passageway building method for low-waterhead dam

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Embodiment Construction

[0023] like Figure 1-Figure 5 As shown, a method for adding fish passages to low-head dams is to dig a submerged hole 2 connecting the high water level side and the low water level side of the dam on the sill 1 of the flood gate near the power plant building 7 as the fish passage. Exit, above-mentioned submerged hole 2 is dug and is located at the No. 1 floodgate 8 that is closest to the power plant building. A fishway body 3 communicated with the submerged hole 2 is built on the side of the floodgate 8 of the partition wall 4 between the downstream of the power plant 7 and the downstream of the floodgate, and the end of the fishway body 3 is used as the entrance of the fish passage. The water flow at the high water level of the dam flows into the fishway body 3 through the submerged hole 2, and then flows out from the end of the fishway body 3. Since fish have the habit of going up the water flow, the water flow from the submerged hole 2 to the entrance of the fishway can at...

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Abstract

The invention relates to the field of water conservancy project, in particular to a fish passageway and a fish passageway building method of a low-waterhead dam. A submersible hole connecting a high water level side and a low water level side of the dam is formed in a bottom sill of a flood discharge gate, which is close to a power plant, and is used as an outlet of the fish passageway; and a fish passageway body communicated with the submersible hole is built on one side of the flood discharge gate of a spacing wall between the downstream of the power plant and the downstream of the flood discharge gate. By the method, the fish passageway favorable for upstream running is built by ingeniously using the structure of the dam; the submersible hole formed in the bottom sill of the flood discharging gate is used as the outlet of the fish passageway, so that the overall structure of the dam cannot be damaged, and the running safety of the dam is not influenced; and the fish passageway body communicated with the submersible hole is built on one side of the flood discharge gate of the spacing wall between the downstream of the power plant and the downstream of the flood discharge gate, so that construction difficulty is reduced and cost is saved.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a method for adding a fish-passing channel and a fish-passing channel suitable for low-head dams. Background technique [0002] The construction of dams in rivers for flood control, power generation, water supply, and navigation has caused the fragmentation of river aquatic ecosystems, posed a serious threat to the survival of migratory and semi-migratory fish, and led to a decline in fish resources in rivers. Biodiversity is reduced. In order to reduce the impact of dam construction on fish resources, the method of building fishways is usually used to help fish migrate from below the dam to above the dam, and to provide channels for the fish above and below the dam to communicate. The construction of fishways in my country began in the 1960s. However, due to the controversy over the measures for the fish passage project of the Gezhouba Water Conservancy Project, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/08E02B9/00
CPCY02E10/22Y02A40/60Y02E10/20
Inventor 李新辉李跃飞赖子尼李捷谭细畅王超杨计平
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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