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Composite geomembrane anti-seepage construction splicing method

A composite geomembrane and membrane surface technology, which is applied in infrastructure engineering, building components, protective devices, etc., can solve problems such as inability to weld, waste adhesive, and difficult to remove, so as to eliminate weak parts, improve anti-seepage effect, and reduce consumption Effect

Inactive Publication Date: 2012-11-14
偃师市天宇土工合成材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the anti-seepage construction of complex-shaped composite geomembrane, the factory reserved joints are limited, and it is often difficult to meet the needs of on-site splicing of composite geomembranes. When the composite geomembrane without reserved joints is spliced, the water permeability of the joint surface The non-woven fabric layer is closely combined with the film, which is difficult to remove and cannot be welded. It is easy to form leakage channels after glue coating and bonding. The anti-seepage effect is not ideal, and the construction speed is slow, which wastes a lot of adhesive
[0004] The current splicing technology is difficult to meet the needs of composite geomembrane anti-seepage construction technology that lacks reserved edges

Method used

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  • Composite geomembrane anti-seepage construction splicing method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 The schematic diagram of the anti-seepage construction splicing method of the two-cloth-one-film polyethylene composite geomembrane is shown. The splicing process is as follows: use an angle grinder to drive a round steel brush to remove the non-woven fabric 1 on the surface of the two composite geomembranes to be spliced, and expose The membrane surface of polyethylene impermeable membrane 2 and control the residual amount of non-woven fabric on the membrane surface of polyethylene impermeable membrane 2 is about 80g / m 2 , corresponding and positioning the two composite geomembranes to be spliced, respectively on the membrane surfaces of the two polyethylene anti-seepage membranes 2 to be spliced ​​(ie figure 1 The splicing width W1 between the shown two polyethylene anti-seepage films 2 light films and the film of the two polyethylene anti-seepage films 2 to be spliced ​​face the position extending 1.5cm from the corresponding base material (ie figur...

Embodiment 2

[0026] Such as figure 1 The schematic diagram of the anti-seepage splicing method of the two-cloth-one-film polyethylene composite geomembrane is shown, and the splicing process is as follows: use an angle grinder to drive a wire wheel to remove the non-woven fabric 1 on the surface of the two composite geomembranes to be spliced, and expose the polyethylene The film surface of the anti-seepage film 2 and control the residual amount of non-woven fabric on the film surface of the polyethylene anti-seepage film 2 is about 60g / m 2 , corresponding and positioning the two composite geomembranes to be spliced, respectively on the membrane surfaces of the two polyethylene anti-seepage membranes 2 to be spliced ​​(ie figure 1 The splicing width W1 between the shown two polyethylene anti-seepage films 2 light films and the film of the two polyethylene anti-seepage films 2 to be spliced ​​face the position extending 2 cm from the corresponding base material (ie figure 1 The film shown ...

Embodiment 3

[0028] Such as figure 1 The schematic diagram of the anti-seepage construction splicing method of two-cloth-one-film polyethylene composite geomembrane is shown, and the splicing process is as follows: use an angle grinder to drive a round steel brush to remove the non-woven fabric 1 on the surface of the two composite geomembranes to be spliced, and expose the polythene The membrane surface of polyethylene impermeable membrane 2 and control the residual amount of non-woven fabric on the membrane surface of polyethylene impermeable membrane 2 to about 20g / m 2 , corresponding and positioning the two composite geomembranes to be spliced, respectively on the membrane surfaces of the two polyethylene anti-seepage membranes 2 to be spliced ​​(ie figure 1 The splicing width W1) between the two polyethylene anti-seepage films 2 shown and the film of the polyethylene anti-seepage film 2 to be spliced ​​face the position extending 5 cm from the corresponding base material (ie figure 1...

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Abstract

The invention belongs to the technical field of seepage control and discloses a composite geomembrane anti-seepage construction splicing method. The method comprises the following steps of: removing a non-woven fabric on the surface of a composite geomembrane to be spliced so as to expose membrane surfaces; coating an adhesive between the two membrane surfaces to be spliced and on the parts of the two membrane surfaces to be spliced respectively, wherein the parts are extented to corresponding parent materials for no less than 1.5cm; and pressurizing to bond the membrane surfaces. The method has the advantages that: (1) the non-woven fabric on the surface of a connected edge is removed by using an angle grinder to drive a circular steel brush or a steel wire wheel with good effect and high efficiency; (2) after the non-woven fabric on the surface of the connected edge is removed, the adhesive is facilitated to permeate onto the surface of the membrane, and after bonding, the adhesive cannot permeate into a passage, so that the anti-seepage effect is improved and the dosage of the adhesive is reduced; (3) the bonded surfaces are extented to the parent material for no less than 1.5cm, so that the part with the weak strength of the connected edge is eliminated and the bonding shear strength of the connected edge is the same as the strength of the parent material; and (4) the method is suitable for laying irregular shapes and repairing the defects of the composite geomembrane during composite geomembrane anti-seepage construction.

Description

technical field [0001] The invention belongs to the field of anti-seepage technology, and in particular relates to a splicing method for composite geomembrane anti-seepage construction. Background technique [0002] At present, composite geomembrane has been widely used in various anti-seepage projects. Among them, polyethylene composite geomembrane is more selected due to its advantages of light weight, high strength, non-toxicity and low price. Polyethylene composite geomembrane is mostly produced by thermocouple and laminating composite method. The factory reserves the construction edge. The polyethylene film and non-woven fabric at the edge are separated, and the polyethylene film can be welded or bonded. [0003] In the anti-seepage construction and laying of complex-shaped composite geomembranes, the factory reserved joints are limited, and it is often difficult to meet the needs of composite geomembrane splicing on site. When the composite geomembrane without reserve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/66E02D31/00E02D31/02
Inventor 蒋学行雷存伟李翠玲李虎星司马军李娟崔国明尹向东吕军卞可赵玉良李自胜马宏军刘孝威姬若玉侯新玉周利选杨黑宗
Owner 偃师市天宇土工合成材料有限公司