Impermeable geomembrane is a kind of polymer synthetic material specially used to prevent the passage of liquid or gas, which is mainly used in the anti-seepage system of various engineering projects. It is made of high-quality plastic films such as high-density polyethylene (HDPE) and has a very low permeability coefficient, which effectively prevents the migration of moisture, chemicals and other contaminants from one area to another.
Impermeable geomembrane features:
1.Excellent impermeable performance: the water vapor permeability coefficient of impermeable geomembrane is very small, for example, HDPE impermeable membrane can reach k = 10*10^-13g.cm/c cm2.s.PA, which means that it is virtually impermeable and has excellent protection against groundwater and soil contamination.
2.High mechanical strength: It has strong tensile resistance, tear resistance, burst resistance and puncture resistance, and can adapt to the stress changes and deformation needs under different geological conditions.
3.Good durability: After being buried in the soil, it can resist microbial erosion, acid and alkali corrosion and ultraviolet radiation, and has a long service life.
4.Convenient construction: It can be welded, bonded or mechanically fixed to form a continuous and complete impermeable layer, and the construction efficiency is high.
5.Widely used: It is often used in reservoir dams, channel linings, landfills, chemical ponds, tailings ponds, underground structure waterproof layers, agricultural irrigation systems and various environmental protection and construction projects in water conservancy and hydropower projects.
The composite impermeable geomembrane is composed of the geomembrane and other geotextiles, such as the non-woven fabric, which not only increases the stability of the impermeable membrane, but also enhances the protective layer to prevent the impermeable membrane from being damaged due to external forces during construction and use, and further improves the safety and reliability of the entire anti-seepage system.