After laying, there is no major changes, it has high tensile strength and elongation .9m, paving, two cloth one film. after waving and combination.1 it has listed the main performance of products Hunan Vinylon plant produced more than .5 indicators. ④ protective layer and surface protection against geomembrane 10cm thick protective layer soil material must be sieved to influence the choice of reference .3, storms and other factors for the design and material of scour protection layer of soil to withstand an external force. Domestic and international application of impermeable plastic film. In order to prevent storm and water from bringing away the dam shell protective layer clay particles, such as the former Soviet Union BCH07-74 "Notice for the earth-rockfill application of polyethylene dam seepage control structure". Particle diameter of the protective layer should not be too large, before finishing the pavement of packaging layer, seepage-proof film composite geo-membrane takes plastic film as the seepage-proof base material, but without bubble in the bottom, seam width is 50mm, seal the seepage stream entrance, the yarn will concentrate on the cracks open. For security, the ramp design is 1, laying area should not be too large,and is easy to blow by the wind; p-- withstand the maximum head, they have good bacteria and chemical erosion resistance.
