It is a member of the large family of geosynthetics, and is widely used in highways, railways, water conservancy, large-scale construction, power plant ash dam construction, non-ferrous metal tailings treatment, environmental protection projects, and soil and water conservation.
The service life of the composite geomembrane is mainly determined by whether the plastic film loses the anti-seepage and water-proof effect. According to the national standard of the Soviet Union, the polyethylene film with a thickness of 0.2 m and a stabilizer is used under water conditions. The working life can reach 40~50 years, and the working life in sewage conditions is 30~40 years. Therefore, the useful life of the composite geomembrane is sufficient to meet the service life of the dam seepage control requirements.
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