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Composite geomembrane is a composite impermeable material, woven or non-woven fabric is used as reinforcement material, and polyethylene is used as impermeable material. Most of the materials are one cloth and one film, and two cloth and one film. Laying impermeable membrane procedure: When laying the impermeable membrane, please make sure that there is no gap in the corner. If there are gaps, they should be filled in time during construction, and the laying order should be determined according to the specific conditions of the moisture content of the laying site. If there are pores, the air should be vented at the air bubble, and the anti-permeable membrane at the vent should be cleaned for subsidies.

In order to effectively improve the construction quality of composite geomembrane, construction quality management is required, and quality management is generally guaranteed from two aspects. One is to ensure the quality of raw materials, and the other is to ensure the quality of the construction process.

The selection of composite geomembrane should be considered from the fields of engineering application, economy, construction process characteristics and raw material characteristics.

The anti-seepage structure of the composite geomembrane consists of a protective layer, an upper buffer layer, an anti-seepage layer, a lower buffer layer and a support layer in sequence.