塑料薄膜渠道防渗技术,顾名思义,就是在渠道内铺设塑料薄膜来防止渗漏的方法。与用混凝土、浆砌石、砖砌等渠道相比,塑料薄膜渠道有不少优点。它不但大大提高了渠道水的利用系数,而且造价低、运料方便、施工简单,防渗效果比较理想。另外这种渠道柔性好,有一定防冻胀能力,适合寒区采用。据有关资料表明,塑料薄膜防渗有效期,在南方可达10—15年,东北寒地也可在9—12年。经实际核算,用塑料薄膜防渗的费用仅为混凝土衬砌的1/8。塑料薄膜渠道衬砌方法,可归 Plastic film channel seepage control technology, as its name implies, is the laying of plastic film in the channel to prevent leakage. Compared with the use of concrete, masonry, brick and other channels, the plastic film channels have many advantages. It not only greatly enhances the coefficient of channel water utilization, but also has the advantages of low cost, convenient transportation of materials, simple construction and perfect anti-seepage effect. In addition the flexibility of this channel is good, there is a certain ability to frost-heave, suitable for use in cold areas. According to the information shows that the effective plastic sheeting seepage, up to 10-15 years in the south, the Northeast can also be cold in 9-12 years. After the actual accounting, the cost of anti-seepage with plastic film is only 1/8 of concrete lining. Plastic film lining lining method, can be