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(1) When laying geomembrane, the joint formed between the membrane blocks shall be T-shaped and shall not be made into a cross shape.
(2) Geomembrane welding is completed. The film is laid flat along the axis of the dam, loosely laid on the side of the crushed dam, and then the excess film is manually rolled up uniformly. The inside of the film is fixed with the same height as the fine sand protective layer. The template is filled with the fine sand protective layer and the gravel transition layer on the other side (both artificial paving, the fine sand protective layer is impact tamping, the sand gravel transition layer is HDZ200 vibrating water tamping), and the volume is completed after completion. The good geomembrane is turned over to the filled side, and fine canvas is laid on the surface of the geomembrane for protection, and the fine sand protective layer and the gravel transition layer of the original placement side are filled.
(3) The geomembrane anti-seepage body is constructed by low and high structure. The geomembrane and bentonite waterproof blanket are laid first, then layered and laid, and the fine sand protective layer and sand gravel transition layer on both sides of the film are laminated. 80cm transition material: the relative tightness is 0.8, the designed dry weight is 2.0g/cm3; the 20cm fine sand is the same as the 80cm transition material. The fine sand protective layer is filled every 20cm, and the sand gravel transition layer is filled every 40cm, and the “canine staggered†ascending method is applied. The laying height of each layer of transition material is twice that of the fine sand protective layer. After laying it, it will not be crushed first. After the fine sand protective layer and the transition material are flushed, it is crushed with the fine sand protective layer and the dam shell material.
(4) The geomembrane laying is performed manually by dividing the blocks in the specified order and direction.
(5) When laying the geomembrane, it should be properly relaxed and avoid artificial hard folds and damage. (http://)