Your present position:Home>>News>>News | Anti-seepage film (composite film geomembrane) construction process | | Author: hongchen Views: 3 Release date: 2012-10-21 | | | Construction precautions: the use of landfill type, cover thickness should not be less than 30cm. 2 the entire anti-seepage system application: cushion, anti-seepage layer, excessive layer, protective layer. 3 The soil should be solid to avoid turf and roots in the uneven subsidence, crack and anti-seepage range. Sand or clay with a small particle size is placed on the contact surface of the membrane as a protective layer. 4 When laying, the geomembrane should not be pulled too tightly, and the two parts buried in the soil part are preferably corrugated, especially when anchored with rigid materials, there should be a certain amount of expansion and contraction. 5 During construction, the stone should be avoided, and the heavy objects should be directly placed on the geomembrane. It is best to lay the film while constructing and cover the protective layer. 2 Seam: The joint treatment of composite geomembrane is the key procedure for construction. It directly affects the operating life of the project. According to the quality inspection, the hot welding method is ideal. The heat welding method is a surface heat treatment in which the PE geomembrane is joined, and the surface is melted, and then dissolved by pressure to be integrated. 1 laying of geomembrane: a cleaning geomembrane laying surface requirements are basically flat, can not have uneven unequal, can not have sharp objects, such as stones, iron wire, wooden sticks, etc., for weeds to spray herbicides. b The geomembrane is best laid in a certain direction, and should not be pulled too tightly, and should have a certain amount of expansion and contraction to adapt to the deformation of the substrate. A certain width of PE film and PET non-adhesive layer are reserved on both sides of the geomembrane. When laying, the geomembrane orientation of each unit should be adjusted to facilitate the welding of the two geomembranes. 2 Geomembrane welding: b For the laid geomembrane, the edge joints are required to have no dirt, water, dust, etc. c Before welding, adjust the PE film on both sides of the joint to make a certain width, and it is flat and without wrinkles. |
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