Reservoir seepage-proofing geomembrane tiered structure and construction method thereof

A layered structure, geomembrane technology, applied in water conservancy engineering, marine engineering, construction and other directions, to ensure the quality of production and construction, simple structure, flexible layout effect

Inactive Publication Date: 2009-11-18
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: according to the needs of hydropower projects, especially the anti-seepage of pumped-storage power station reservoirs, it has the characteristics of strong ability to adapt to foundation deformation, good anti-seepage effect, less investment in construction equipment, fast construction speed, convenient repair, and low cost.

Method used

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  • Reservoir seepage-proofing geomembrane tiered structure and construction method thereof

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Embodiment Construction

[0022] like figure 1 As shown, the present embodiment has a slag-filling layer 1 at the bottom of the reservoir, on which the lower supporting transition layer 2, the lower supporting cushion layer 3, the geomembrane anti-seepage layer 6 and the upper protective layer are successively laid, and the characteristic is that the lower supporting cushion layer 3 and the anti-seepage layer 6 of the geomembrane lay a geotechnical mat 4, the geotechnical mat 4 is made of a three-dimensional mesh material that is self-bonded by high-density polyethylene plastic filaments in a hot-melt state.

[0023] The geomembrane anti-seepage layer 6 adopts a HDPE composite geomembrane with a thickness exceeding 1 mm. In view of the relatively hard HDPE thick film material, the current HDPE composite geomembrane with a thickness exceeding 1 mm is produced by blow molding or calendering. Therefore, the geotextile protective layer 7 and the underlying geotextile cushion layer 5 are respectively laid o...

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Abstract

The invention relates to a reservoir seepage-proofing geomembrane tiered structure and a construction method thereof. For solving the technical problems, the invention provides the reservoir seepage-proofing geomembrane tiered structure and the construction method featuring simple structure, small engineering quantity, convenient construction and convenient examination and reparation, good safe reliability, excellent seepage-proofing effect, good endurance performance and geomembrane hard to be damaged. The technical solutions for solving the problem is as follows: the reservoir seepage-proofing geomembrane tiered structure has a slag fill layer on the bottom of the reservoir, a lower supporting transition layer, a lower supporting cushion layer, a geomembrane seepage-proofing layer, and an upper protective layer are arranged from the bottom to the top the slag fill layer on the bottom of the reservoir in sequence. The reservoir seepage-proofing geomembrane tiered structure has the characteristics that soil engineering straw mats are arranged between the lower supporting cushion layer and the geomembrane seepage-proofing layer. The reservoir seepage-proofing geomembrane tiered structure and the construction method of the invention can be used to water resources and hydropower, municipal environmental geomembrane seepage-proofing engineering.

Description

technical field [0001] The invention relates to a reservoir anti-seepage geomembrane layered structure and a construction method thereof. It is mainly suitable for water conservancy and hydropower, municipal and environmental protection geomembrane anti-seepage projects. Background technique [0002] The upper reservoir of the pumped storage power station is generally on a high terrain, with no or little natural water source and runoff, and the water pumped from a low place to a high place and stored in the upper reservoir is the carrier of electric energy conversion, so there is a high requirement for reservoir anti-seepage. The reservoir anti-seepage forms adopted by energy storage power stations include reinforced concrete panels, asphalt concrete panels, and vertical curtain grouting anti-seepage. There is no precedent for the use of thin and light geomembrane anti-seepage in hydropower projects. There have been engineering applications of anti-seepage geomembrane layer...

Claims

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Application Information

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IPC IPC(8): E02B3/16
Inventor 侯靖何世海张春生
Owner POWERCHINA HUADONG ENG COPORATION LTD
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