An intelligent phase change capsule geomembrane for anti-frost heave damage of lining

A phase change capsule and anti-frost heave technology, which is applied in sea area engineering, water conservancy projects, rubber layered products, etc., can solve the problems of foundation soil freezing and frost heaving, achieve the elimination of freezing effect, eliminate frost heaving, and avoid heat release and loss Effect

Active Publication Date: 2022-03-18
NANJING HYDRAULIC RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

When the above geomembranes are used in winter, there are problems of frost heave, geomembrane, lining and foundation soil freezing together

Method used

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  • An intelligent phase change capsule geomembrane for anti-frost heave damage of lining
  • An intelligent phase change capsule geomembrane for anti-frost heave damage of lining
  • An intelligent phase change capsule geomembrane for anti-frost heave damage of lining

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Effect test

Embodiment 1

[0037] as attached figure 1 As shown, a kind of intelligent phase change capsule geomembrane used for anti-frost heave damage of lining comprises the first non-woven fabric layer 100 arranged on the upper layer, the first plastic film layer 200 arranged on the lower layer, and the first non-woven fabric layer arranged on the first layer. A soft grid 300 between the layer 100 and the first plastic film layer 200 , and a capsule 400 disposed within the soft grid 300 .

[0038]The capsule 400 has a sealed structure, and the capsule 400 is filled with a phase change solution 500. When the soft grid 300 is squeezed and deformed, the capsule 400 is squeezed, causing a phase change of the phase change solution 500 to release heat .

[0039] When the geomembrane is used, the first non-woven fabric layer 100 is in contact with the lining, and the first plastic film layer 200 is in contact with the foundation soil.

[0040] Further, the capsule 400 is filled with a volume ratio of 70-...

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Abstract

The invention relates to an intelligent phase-change capsule geomembrane for anti-frost heave damage of lining, comprising a first non-woven fabric layer arranged on the upper layer, a first plastic film layer arranged on the lower layer, a first non-woven fabric layer arranged on the first layer and a first plastic film layer arranged on the lower layer. The soft grid between the first plastic film layers, and the capsule arranged in the soft grid; the capsule is filled with a phase change solution, and when the soft grid is extruded and deformed, the capsule is squeezed, causing the The phase change solution undergoes a phase change, releasing heat. The invention adopts a soft grid with a built-in capsule structure, which is pressed between the non-woven fabric layer and the plastic film layer of the geomembrane. The soft grid can bear the uniform surface load of the upper lining board at normal temperature; When the expansion deformation occurs, the soft grid will be squeezed and deformed, and the phase change solution in the capsule will undergo a phase change after being squeezed, releasing a large amount of heat, which will melt the soil ice at the frost heaving position, thereby eliminating the frost heaving, and at the same time, eliminating the geotechnical The freezing effect between membrane, lining and foundation soil.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to an intelligent phase-change capsule geomembrane used for preventing frost heave damage of linings. Background technique [0002] Geomembrane is an anti-seepage material composed of anti-seepage film and non-woven fabric with one cloth and one film or two cloths and one film. The anti-seepage film uses plastic film as the anti-seepage substrate. The leakage channel of the earth dam can be permanently separated, and it can bear the water pressure and adapt to the deformation of the dam body with its large tensile strength and elongation; and the non-woven fabric is also a kind of polymer short fiber chemical material, which is formed by needle punching or thermal bonding. It has high tensile strength and extensibility. After it is combined with the plastic film, it not only increases the tensile strength and puncture resistance of the plastic film, but also in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/16B32B25/10B32B25/14B32B15/14B32B15/02B32B27/12B32B27/32B32B3/08B32B3/12B32B33/00
CPCE02B3/16B32B5/022B32B25/10B32B25/14B32B15/14B32B15/02B32B27/12B32B27/32B32B3/08B32B3/12B32B33/00B32B2419/00
Inventor 朱洵王羿蔡正银黄英豪张晨韩迅郭万里朱锐简富献厉立兵刘锐明
Owner NANJING HYDRAULIC RES INST
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