0.5mmPE thick 800g composite geomembrane_800g two cloth one membrane structure 150g/0.5mm/150g

Description :

　　Composite geomembranes are widely used in channel anti-seepage engineering. The extensive application and effectiveness of geosynthetic materials in civil engineering, especially in flood control and emergency engineering, have attracted high attention from engineering and technical personnel. For the application technology of geosynthetics, the country has put forward standardized technical requirements from aspects such as anti-seepage, filtration, drainage, reinforcement, and protection, greatly accelerating the promotion and application of new materials. This material has been widely used in the anti-seepage engineering of irrigation channels. Based on construction practice, this article briefly discusses the application technology of composite geomembranes.

　　Composite geosynthetic membrane is an impermeable material composed of geotextile and geosynthetic membrane. It is mainly used for anti-seepage. Composite geosynthetic membrane is divided into one fabric and one membrane and two fabrics and one membrane, with a width of 4-6m and a weight of 200-1500g/m2. It has high physical and mechanical performance indicators such as tensile strength, tear resistance, and bursting resistance, and can meet the needs of civil engineering such as water conservancy, municipal engineering, construction, transportation, subway, tunnel, etc. Due to the use of polymer materials and the addition of anti-aging agents in the production process, it can be used in unconventional temperature environments.

　　Precautions for construction of composite geomembrane:

　　1. Composite geomembrane is formed by heating one or both sides of a thin film with far-infrared radiation in an oven, and pressing the geotextile and geomembrane together through a guide roller. With the improvement of production technology, there is also a casting method for making composite geomembranes. Its forms include one cloth and one film, two cloths and one film, two films and one cloth, etc. 0.5mmPE thick 800g composite geomembrane_800g two cloth one membrane structure 150g/0.5mm/150g

　　2. Geotextile serves as a protective layer for geomembrane, preventing damage to the anti-seepage layer. In order to reduce the ultraviolet radiation and increase the anti-aging performance, the embedding method is adopted.

　　During construction, the first step is to use sand or clay with smaller diameters to level the base surface, and then lay the geomembrane. Do not tighten the geomembrane too tightly. The two ends should be buried in the soil in a corrugated shape, and then a transition layer of about 10cm should be laid on the geomembrane with fine sand or clay. 0.5mmPE thick 800g composite geomembrane, two cloth one membrane structure 150g/0.5mm/150g, with 20-30cm block stones (or precast concrete blocks) laid on top as a protective layer against erosion. During construction, efforts should be made to avoid stones directly hitting the geomembrane, and protective layer construction should be carried out while laying the membrane. The connection between composite geomembrane and surrounding structures should be anchored with expansion bolts and steel plate pressure strips. The connection area should be coated with emulsified asphalt (2mm thick) for bonding to prevent leakage.

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