(1) The joint treatment of geomembrane is a key construction procedure, which directly affects the service life of the project. According to the quality inspection, the use of thermal welding is ideal. The thermal welding method is to heat the surface of the PE geomembrane to melt it, and then combine it with pressure.
(2) The geomembrane is laid in a certain direction, and a certain PE film and PET adhesive layer are reserved on both sides of the geomembrane. When laying, the direction of each unit of the geomembrane should be adjusted to facilitate the welding of the two geomembrane units.
(3) After laying the geomembrane, use sandbags to compress it to prevent wind movement, and there should be no dirt, moisture, dust, etc. at the edge joints.
(4) Before welding, adjust the PE single-layer film on both sides of the joint so that it overlaps a certain width, and is flat and without wrinkles.
(5) When welding, a technician with certain experience should be used for welding, and a special welding machine should be used for welding. It is necessary to adjust the temperature and speed (it can also be pasted).
According to years of practice, the thickness of the geomembrane is not less than 0.25mm. If it is too thin, pores may be generated, which are easily damaged during the construction process and reduce the anti-seepage effect. In the construction of geomembrane, special attention should be paid to ensure that the laying is not too tight, no wrinkles, and the splicing must be firm. The construction should be carried out in strict accordance with the technical specifications, and the five quality barriers of preparation, laying, splicing, inspection and backfilling should be checked.