A structure for providing ecological flow in downstream reaches of hydropower projects
A technology for ecological flow and river sections, applied in water conservancy projects, sea area projects, coastline protection, etc., to achieve low cost and low risk effects
Active Publication Date: 2018-07-03
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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- Application Information
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Problems solved by technology
[0003] The present invention aims to provide a structure for providing ecological flow in the downstream section of the water conservancy and hydropower project, so as to solve the problem of dehydration in the section between the downstream cofferdam and the outlet of the diversion tunnel that may be overlooked in the prior art. It is convenient and easy to implement, scientific and reliable
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[0011] The technical scheme of the present invention will be further described below in conjunction with the accompanying drawings, but the required protection scope is not limited to the description;
[0012] Such as figure 1 As shown, the structure provided by the present invention to provide the ecological flow of the downstream section of the water conservancy and hydropower project includes an engineering dam 1, and the engineering dam 1 divides the river into an upstream section 8 and a downstream section 9, and the upstream and downstream sections of the engineering dam 1 An upstream cofferdam 2 and a downstream cofferdam 3 are respectively arranged downstream, a diversion tunnel 5 is provided between the upstream section 8 and the downstream section 9, and the diversion entrance 4 of the diversion tunnel 5 is placed in the upstream section 8 and placed Upstream of the upstream cofferdam 2 , the diversion outlet 6 is placed in the downstream section 9 and downstream of ...
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The invention discloses a structure for providing ecological flow in the downstream section of a water conservancy and hydropower project, including an engineering dam, which divides the river into an upstream section and a downstream section, and upstream and downstream of the engineering dam are respectively provided with upstream Cofferdam and downstream cofferdam, a diversion tunnel is set between the upstream section and the downstream section, the diversion entrance of the diversion tunnel is placed in the upstream section and upstream of the upstream cofferdam, and the diversion outlet is placed The section is placed downstream of the downstream cofferdam, and a diversion channel is set between the diversion tunnel and the downstream cofferdam. The invention can ensure the required ecological flow of the river section between the downstream cofferdam and the outlet of the diversion tunnel, avoiding the dehydration of the river section; and the structure has little risk, is simple and easy to implement, is convenient and practical, and has low cost, and will not damage permanent buildings. It has its own flaws and is worth promoting.
Description
technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a structure for providing ecological flow in the downstream downstream of the water conservancy and hydropower engineering. Background technique [0002] In recent years, with the continuous improvement of my country's environmental protection requirements for water conservancy and hydropower projects, the issue of ecological flow discharge from reservoir projects has become a focus of environmental protection authorities. During the construction of water conservancy and hydropower projects, relying on staged cofferdams or diversion tunnels for diversion will generally not cause dehydration in dehydrated river sections. At present, there are many schemes for releasing ecological flow through diversion tunnels during water storage period and operation period of water conservancy and hydropower projects. (3) Set holes and electric butterfly val...
Claims
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IPC IPC(8): E02B8/00E02B7/00
Inventor 夏豪魏浪纵霄张虎成
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD