Composite geomembrane anti-seepage structure and construction method that can automatically adapt to weir body deformation

A composite geomembrane, self-adapting technology, applied in similar engineering fields, can solve problems such as loss of due function and difficulty in expansion of expansion joints, reducing tensile or shear damage, reducing strain concentration, and reducing the degree of damage Effect

Active Publication Date: 2017-07-28
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the joint between the composite geomembrane and the shore toe board and the cut-off wall, since the composite geomembrane is laid on the particle filler with a small modulus, there is a relatively large relative displacement with the rigid connection. Install horizontally stacked expansion joints, but this type of expansion joint is easily compressed by the overlying filler and water load, making it difficult to expand and lose its due effect

Method used

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  • Composite geomembrane anti-seepage structure and construction method that can automatically adapt to weir body deformation
  • Composite geomembrane anti-seepage structure and construction method that can automatically adapt to weir body deformation
  • Composite geomembrane anti-seepage structure and construction method that can automatically adapt to weir body deformation

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment one: if figure 1 , figure 2 As shown, the concrete structure in this example is a concrete plinth 1, one side of the plinth is the shore bedrock 15, and the other side is connected with the cushion layer 5, and the bottom plate of the concrete plinth 1 and the shore bedrock are connected by anchor bars 4 is connected with the consolidation grout 2 and the grouting curtain 3 is set along the axis of the concrete plinth 1; The inner end of the upper protective layer PE film 10 and the subsequent part of the lower protective layer PE film 6 are respectively covered on the U-shaped expansion joint 7 and the auxiliary horizontal expansion joint by painting asphalt with a thickness of 0.2mm and the surface of the concrete toe slab 1. 9 upper and lower surfaces.

[0034] The construction method of embodiment one is as follows:

[0035] a. Concrete plinth 1 and anti-seepage system setting: one side of the concrete plinth 1 is the shore bedrock 15, which provides ...

Embodiment 2

[0042] Embodiment two: if figure 2 , image 3 As shown, the concrete structure of this example is an anti-seepage wall 12, and the top of the anti-seepage wall is a concrete cap 13 and a guide wall 14; The inner end of the lower protective layer PE film 6 is bonded to the surface of the concrete cap 13 by painting asphalt with a thickness of 0.2mm, and the subsequent parts of the upper protective layer PE film 10 and the lower protective layer PE film 6 are respectively covered on the U-shaped expansion joint 7 and The upper surface and the lower surface of the auxiliary horizontal expansion joint 9.

[0043] The construction method of embodiment two is as follows:

[0044] a. Concrete anti-seepage wall 12 and anti-seepage system setting: the upper end of the concrete anti-seepage wall 12 is a concrete cap 13 and a guide wall 14, and the two sides of the concrete cap 13 are connected to the cushion layer 5;

[0045] b. Setting of cushion layer 5: below the cushion layer 5 ...

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Abstract

The invention relates to a composite geomembrane anti-seepage structure and a construction method capable of automatically adapting to the deformation of a weir body. The invention aims to reduce the degree of damage at the joint between the composite geomembrane and the concrete plinth or at the overlapping joint with the concrete cap on the top of the concrete anti-seepage wall. The technical solution of the present invention is: the anti-seepage structure includes a concrete structure and a pad layer connected thereto, a composite geomembrane with anti-seepage function is arranged between the concrete structure and the pad layer, and the composite geomembrane includes an upper protective layer PE film , the lower protective layer PE film, U-shaped expansion joints and auxiliary horizontal expansion joints, the U-shaped expansion joints are set up vertically, the U-shaped opening ends upward, one end is fixed in the concrete structure, and the other end extends horizontally and connects with the auxiliary horizontal expansion joints. One end of the expansion joint is connected, and the other end of the auxiliary horizontal expansion joint is connected with the other anti-seepage geomembrane of the weir body; one end of the upper protective layer PE film and the lower protective layer PE film are bonded to the concrete structure, and the other end conforms to the expansion joint The shape overlay extends outward synchronously.

Description

technical field [0001] The invention relates to a composite geomembrane anti-seepage structure and a construction method capable of automatically adapting to the deformation of a weir body, and is mainly suitable for high earth-rock cofferdams, earth-rock dams and similar projects using composite geomembrane anti-seepage in hydropower and water conservancy projects. Background technique [0002] With the implementation of my country's western development strategy, the height and scale of earth-rock cofferdams are increasing year by year. Due to the convenience and economy of construction, many cofferdams adopt the anti-seepage type of inclined wall composite geomembrane. The technical difficulty of high earth-rock cofferdam also increases with the increase of the scale of the cofferdam. At the joint between the composite geomembrane and the shore toe board or the joint between the cut-off wall, due to the water pressure and self-weight, the overall deformation of the weir bod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/16
CPCE02B3/16E02D17/00E02B3/10E02B7/06
Inventor 王永明蔡建国梁现培任金明邓渊李军吴关叶黄雷
Owner POWERCHINA HUADONG ENG COPORATION LTD
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