渠道渗漏不仅降低渠系水利用系数，而且还抬高地下水位，导致农田渍害及盐碱化的发生。因此对渗漏的渠道采取防渗措施不仅可以减少渠水渗漏，还能起到抗冲、减少渠道糙率、加大流速、增加输水能力、减少渠道淤积和防止渠道生长杂草的作用，同时节省维修费用和清淤劳力。 Channel leakage not only reduces canal water use factor, but also raise groundwater level, leading to soil erosion and salinization occurred. Therefore, seepage control measures can not only reduce seepage canal leakage, but also play a role in reducing the channel roughness, increased flow rate, increase water delivery capacity, reduce channel siltation and prevent weeds in the channel growth , While saving maintenance costs and dredging labor.