What are the main functions of anti-seepage geomembrane?

Anti-seepage geotextile membrane is a kind of waterproof and barrier material with high molecular polymers (such as polyethylene (PE), polyvinyl chloride (PVC), ethylene/vinyl acetate copolymer (EVA), etc.) as the base material. Its core functions and specific manifestations are as follows: ‌ 1. Youdaoplaceholder1 anti-seepage function ‌ ‌ principle ‌ Through its dense molecular structure and extremely low porosity, it effectively blocks the penetration of liquids (such as water and sewage) and gases. Youdaoplaceholder0 application scenarios ‌ : anti-seepage at the bottom of landfill sites to prevent harmful substances from polluting groundwater; Reduce water resource seepage in water conservancy projects such as reservoirs and DAMS; Waterproof layers for infrastructure such as tunnel linings and water storage tanks. 2. Youdaoplaceholder0 isolation function ‌ ‌ principle ‌ : Separate media of different properties (such as soil and pollutants) to prevent mixing or chemical reactions. Typical uses of ‌ ‌ : in road engineering, it isolates the subgrade from the pavement layer to extend the service life; When remediating contaminated soil, it is necessary to prevent the diffusion of pollutants. 3. Youdaoplaceholder0 Reinforcement and protection function ‌ ‌ Reinforcement mechanism ‌ : High tensile strength and elongation (such as fracture elongation up to 700%) can enhance soil stability and adapt to foundation deformation. For example, it is used in combination with geogrids in slope protection to enhance the anti-slip capacity. Youdaoplaceholder0 Protective function ‌ : to prevent ultraviolet rays, chemical corrosion or mechanical damage (such as pipe wrapping); Reduce water loss in agriculture and increase the survival rate of crops. 4. Youdaoplaceholder0 Other auxiliary functions ‌ ‌ Filtration function ‌ : Tiny pores can filter soil particles, which is used to prevent clogging in drainage systems; Youdaoplaceholder0 Durability ‌ : Resistant to chemical corrosion and aging (with a service life of 50-70 years), suitable for harsh environments (such as coastal projects). Youdaoplaceholder0 summary ‌ : The multi-functionality of anti-seepage geomembrane makes it a key material for water conservancy, environmental protection, transportation and other projects. It is both economical (with a cost about 50% lower than that of traditional materials) and convenient for construction (the hot-melt welding technology is highly efficient and reliable).