塑料薄膜防渗较其它材料优点多:如果接头处理得好,可完全不透水,一般情况下可减少渗漏90—95%,它适应于可能发生沉陷和位移的渠道;有较好的抗细菌和抗化学作用,不受盐碱土壤的侵蚀;它有较好的耐冻性,适用于北方地区。防渗铺衬方法有两种:一种是表面式(表面铺衬)。这种形式,渠道表面光滑,可避免冲刷和淤积,但直接 Plastic film seepage control advantages over other materials and more: If the joint handle well, can be completely impermeable, under normal circumstances can reduce the leakage of 90-95%, it is adapted to the possible sink and displacement of the channel; have better anti-bacterial And chemical resistance, not affected by saline soil erosion; it has good resistance to freezing, suitable for the northern region. There are two ways of impermeable lining: one is surface type (surface lining). This form, the channel surface smooth, to avoid erosion and siltation, but direct