Geomembrane applications: used in railway, highway, sports hall, dams, hydraulic construction, reservoirs, canals, dams horizontal impervious laying, vertical seepage laying. Seawater, freshwater, water conservancy, chemical industry, construction, transportation, subways, tunnels, waste disposal sites, farms seepage tunnel, coastal beach, land reclamation, environmental protection and other projects. The HDPE geomembrane landfill seepage (Special); seepage of sewage treatment plant (designed) HDPE geomembrane; Plant tailings processing the impermeable (Special) HDPE geomembrane; chemical plants, fertilizer plants, sugar mills sewage the tailings processing (specifically) HDPE geomembrane; nonferrous metallurgy, sulfuric acid pool, tailings disposal (designed) HDPE geomembrane. Subway, basement, tunnel, roof lining impermeable. Hydraulic engineering: seawall, Dyke, Hudi compliance engineering; reservoir reinforcement project; Reclamation Project; flood control. Port Engineering: soft Reinforcement processing; slope protection; pavement structural layers of anti-reflective cracking; drainage system; greenbelt. Electrical Engineering: nuclear power plant foundation engineering; thermal power ash dam project; Hydropower Project. 1. Environmental protection, sanitation (such as solid waste landfill, sewage treatment plants, power plant regulation pool, industrial, hospital solid waste, etc.) 2. Water Resources (such as rivers, lakes and reservoirs dam seepage plugging, reinforcement, drains impervious the vertical core wall, slope protection, etc.) 3. Municipal projects (underground subway, building engineering, planted roof, roof garden impervious lining of sewers, etc.) 4. Garden (artificial lakes, rivers, reservoirs, golf course pond underlay, slope protection, green lawn waterproof moisture, etc.) 5. Petrochemical (chemical plants, oil refineries, gas stations, oil tank seepage, chemical reaction pool, the inner lining of the sedimentation tank, secondary lining, etc.) 6. Mining (washing pool, heap leaching pool, the ash-field, dissolving pool, settling ponds, yards, underlay of tailings seepage, etc.) 7. Transport facilities (road base reinforcement, culverts impervious) 8. Agriculture (reservoirs, drinking water pools, water storage pond, irrigation systems impervious) 9. Aquaculture (intensive, factory farming pools, fish ponds, shrimp ponds lined sea cucumber circle slope, etc.) 10. Salt (saltworks crystalline pool, halogen pool thatch cover the salt film Yanchi Plastic thatch film) in terms of performance mainly consider the following aspects: 1.1 good physical and mechanical properties of the composite geomembrane poor working conditions in many cases are soaked in water or shop in a very humid soil, it must have a good hydrolysis resistance and mechanical properties of the wet. 1.2 resistant to ultraviolet radiation, hydrolysis resistant, resistant to high temperature composite geomembrane exposed to sunlight, and therefore has a corresponding UV resistance; a composite geomembrane to adapt to the temperature at the time of contact with the asphalt and other materials, requires high melting point. 1.3 chemical resistance, corrosion resistance, resistance to mildew water and soil are very different, some alkaline, some acidic, some salty, some containing a variety of elements, and therefore must have chemical stability. 1.4 good permeability of composite geomembrane filtration and drainage needs permeable, and therefore must have good permeability. Composite geomembrane is woven as a substrate by extrusion coating a polyolefin resin film or a polyolefin resin as a sandwich layer, the woven cloth and various the Zhi sheets bonded together made. 2, the products made from the bags with a light weight, acid and alkali, high strength, moisture-proof waterproof advantages. 3, widely used in fertilizers, synthetic resin, coarse salt, ores and cement products, packaging, re-packaging of good packaging material seams matters (1) composite geomembrane joints processing is a key program of the construction, the direct impact of operation of the project life, quality testing showed that the ideal heat welding method. (Also available dedicated adhesive) thermal welding method is PE geomembrane contacting surface heating treatment, so that melting of the surface, and then through the pressure of the fused into one, (2) geomembrane preferably laying along a certain direction, geomembrane both sides set aside to certain PE film and PET adhesive layer, each unit geomembrane toward laying to adjust, so that the two units geomembrane welding. (3) geomembrane laying, use sand bags to hold him down, to wind action, and the edge seams request can not be dirt, moisture, dust and other. (4) good seams two side PE single film to be adjusted prior to welding, lap broadband and flat, without wrinkles. Welding (5), it is best to have some experience of the technical staff welding, welding using special welding machine for welding. To adjust the temperature and speed (adhesive bonding). Based on many years of practice to prove the geomembrane thickness not less than 0.25mm, too thin may blowholes, and easy to damage and reduce impervious effect in the construction. The geomembrane Construction, with particular attention to do laying should not be too tight, not wrinkled, spliced ??to firmly. To construction in strict accordance with the technical specifications, the good preparation, laying, splicing, testing and backfilling five quality. Composite impermeable geomembrane effect the Baojixia water-efficient irrigation renovation and Corollary project construction, extensive use of the materials, design, construction units. Control a civil grassroots surfaces laying of venue requirements: four times the flatness: ± 2cm/m2, flat straight; compaction degree: 95% on it after rolling before laying geomembrane; 3 vertical, horizontal slope: longitudinal, transverse slope should be 2%, the boundary of the contour of the bottom of the landfill and the structure must be conducive to the leachate diversion; 4 Cleanliness: vertical depth of 2.50cm shall roots, rubble, gravel, concrete particles angular debris. Geomembrane characteristics: they are flexible material of a polymer chemistry, a smaller proportion of strong extended to adapt to high deformation capacity, corrosion resistance, low temperature resistance, frost resistance. The advantages of impermeable, durability, protective. Characteristics of composite geomembrane