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Pavement and installation of geomembrane: 1, It should be extended from the bottom to the high, do not pull too tight, should be left with more than 1.50% of width in order to prepare for local subsidence. Considering the actual situation of the project, the construction of side slope is taken from top to bottom. 2) two adjacent longitudinal joints should not be in a horizontal line, and should be staggered over 1M. 3) longtudinal joints should be apart from dam toe, bending foot more than 1.50M, and should be located in the plane. 4) back slope first and then comes with bottom. 5) when paving side slope, the direction of the film should be parallel to the maximum gradient line. Secondly, we should do a good job in the preparatory work of the construction and installation of geomembrane welding: 1 cutting and transportation: According to the records of laying base measurement , cutting large bundle number of geomembrane should be marked and recorded and then carried to construction site according to their number. Attention: during the transportion, do not pull and drag geomembrane, and try to avoid sharp objects.
