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Dam type hydropower station construction flow guide structure

A technology for construction diversion and hydropower station, which is applied in the direction of hydropower station, water conservancy project, hydropower generation, etc. It can solve the problems of nesting and long construction period, and achieve the effect of shortening construction period, occupying small width of river bed and compact structure layout.

Pending Publication Date: 2019-02-22
POWERCHINA CHENGDU ENG
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Problems solved by technology

[0004] The disadvantage is that due to the suspension of work in multiple flood seasons, the construction period of the project is usually long, and there is a problem of layoffs during the flood season, resulting in related engineering costs

Method used

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  • Dam type hydropower station construction flow guide structure
  • Dam type hydropower station construction flow guide structure
  • Dam type hydropower station construction flow guide structure

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Embodiment Construction

[0020] In order to facilitate the understanding and implementation of the present invention, the preferred embodiments of the present invention are selected for further description in conjunction with the accompanying drawings.

[0021] Such as Figure 1 to Figure 6 As shown, the construction diversion structure of the dam-type hydropower station in the present invention has a dry period cofferdam 1 built on one bank of the river to form a first-stage dry period foundation pit 2; in the first-phase dry period foundation pit 2, a power generation The annual cofferdam 3 upstream of the power plant foundation pit, the annual cofferdam 4 downstream of the power plant foundation pit, and the concrete longitudinal annual cofferdam 5 form the power plant foundation pit 6; the concrete longitudinal annual cofferdam 5 uses a diversion bottom hole 7 and the composite structure of the longitudinal guide wall, the lower part is the diversion bottom hole 7, and the side above the diversion...

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Abstract

The invention relates to a dam type hydropower station construction flow guide structure, and belongs to the technical field of dam type hydropower station construction. A first-stage dry period cofferdam is built on one side of a river channel, and a first-stage dry period foundation pit is formed; in the first-stage dry period foundation pit, a upstream whole-year cofferdam of a power generationplant foundation pit, a downstream whole-year cofferdam of the power generation plant foundation pit and a concrete longitudinal whole-year cofferdam are built, so that the power generation plant foundation pit is formed; the concrete longitudinal whole-year cofferdam adopts a composite structure of flow guide bottom holes and a longitudinal guide wall, the below of the concrete longitudinal whole-year cofferdam are the flow guide bottom holes, the longitudinal guide wall is arranged on one side, close to the foundation pit, of the power generation plant above the flow guide bottom holes; through the set of the concrete longitudinal whole-year cofferdam, a second-stage foundation pit dry period upstream cofferdam and a second-stage foundation pit dry period downstream cofferdam, a second-stage foundation pit is formed on the other side of the river channel. The dam type hydropower station is suitable for the dam type hydropower station which is large in flow difference in the flood period and the dead water period and is not large in channel width, and the purposes of reducing the engineering cost and ensuring the power generation period are achieved.

Description

technical field [0001] The invention relates to a construction diversion structure of a dam-type hydropower station, which belongs to the technical field of dam-type hydropower station construction. Background technique [0002] According to the conventional design ideas of hydropower projects, in the hub layout design and construction of dam-type development hydropower stations with large flow differences between flood seasons and dry seasons and small river bed widths, staged dry season diversion is usually adopted, that is, multiple dry seasons are used for phased construction , under the protection of the cofferdam in the dry season, the main project construction will be carried out in the dry season, and the project will be shut down in the flood season due to flooding of the foundation pit. Construction can only be continued during the flood season only when the main project building reaches a certain height and exceeds the flood level in the flood season after several...

Claims

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Application Information

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IPC IPC(8): E02B9/00E02D19/04
CPCE02B9/00E02D19/04Y02E10/20
Inventor 王峰刘亚洲龙军飞李万军
Owner POWERCHINA CHENGDU ENG
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