Geomembrane It is a waterproof barrier material based on * * * polymer. Mainly divided into: gather ethylene （ LDPE ）Geomembrane, high-density polyethylene（ HDPE ）Geomembrane and EVA Geomembrane
The properties of HDPE geomembrane * * * are as follows: 1. HDPE geomembrane is a flexible waterproof material with a very high anti-seepage coefficient (1 × 10-17 cm/s);
2. HDPE geomembrane has good heat and cold resistance, and its operating environment temperature is 110 ℃ at high temperature and - 70 ℃ at low temperature;
3. HDPE geomembrane has good chemical stability, which can prevent strong acid, alkali and oil;
4. HDPE geomembrane has high tensile strength, which can meet the needs of high standard engineering projects;
5. HDPE geomembrane has strong weather resistance, which can be exposed for a long time to maintain the original performance;
6. Overall performance of HDPE geomembrane, HDPE geomembrane has strong tensile strength and elongation at break, which enables HDPE geomembrane to be used under various adverse geological and climatic conditions. Strong strain force to adapt to geological uneven settlement;
7. HDPE geomembrane uses original plastic and carbon black particles without any preservatives. HDPE has been used in China to replace PVC as the raw material of food packaging bags and fresh-keeping films.
Main applications
1. HDPE geomembrane is applicable to environmental protection and sanitation: such as landfill, sewage treatment plant, power plant regulating tank, industrial, solid waste, etc;
2. LDPE anti-seepage membrane is applicable to water conservancy projects: such as anti-seepage, leakage blocking, reinforcement of rivers, lakes, reservoirs, dams, anti-seepage of canals, vertical core walls, slope protection, etc;
3. HDPE anti-seepage membrane is used for municipal works: subway, underground works of buildings, planting roofs, roofs, and sewage pipes;
4. Polyethylene anti-seepage film is suitable for gardens: artificial lakes, rivers, reservoirs, pool bottom of golf courses, slope protection, green lawn waterproof and moisture-proof;
5. HDPE geomembrane is suitable for petrochemical industry: chemical plant, oil refinery, anti-seepage of storage tank, lining and secondary lining of chemical reaction tank and sedimentation tank;
6. Polyethylene geomembrane is suitable for mining industry: bottom lining seepage prevention of washing pond, heap leaching pond, ash yard, dissolution pond, sedimentation pond, storage yard, tailings, etc;
7. Polyethylene film is suitable for traffic facilities: road foundation reinforcement, culvert seepage prevention;
8. LDPE anti-seepage membrane is suitable for agriculture: anti-seepage of reservoirs, drinking water pools, impounding ponds and irrigation systems;
9. HDPE film is suitable for aquaculture industry: intensive and industrialized aquaculture ponds, fish ponds, lining of shrimp ponds, slope protection of sea cucumber circles, etc;
10. High density polyethylene anti-seepage film is suitable for salt industry: salt field crystallization pool, brine pool cover, salt film, salt pool plastic cover.
Construction method
Do not drag or hard drag the geomembrane during transportation open Sharp objects stab.
1. It shall be extended from the bottom to the high position, and shall not be pulled too tightly, leaving a margin for local sinking and stretching. Considering the actual situation of the project, the slope is laid from top to bottom;
2. The longitudinal joints of two adjacent sheets shall not be on the same horizontal line and shall be staggered for more than 1m;
3. The longitudinal joint shall be more than 1.50m away from the dam foot and bend foot, and shall be set on the plane;
4. Slope first and then site bottom;
5. During slope laying, the film spreading direction shall be basically parallel to the large slope line.
