渠道防渗技术新进展

介绍了有关北方混凝土渠道防渗防冻胀技术，土壤固化剂及聚合物纤维混凝土在渠道防渗工程中应用技术，结论认为：采用聚乙烯土工膜，复合土工膜等柔性材料与刚性保护相结合是高寒地区较合理的渠道防渗结构形式；土壤固化剂能与各类土壤发生化学或生物作用，改变土壤结构，亲水性等性质，特别是缺乏砂石料的灌区有广泛的应用空间，聚合物纤维混凝土在灌区渠道防渗工作中可以防止或减少混凝土裂缝，具有高变形能力和耐久性。

New Advances in Canal Seepage Control Technique

Seepage control and anti-frost techniques for concrete canal in North China, and application of soil solidifier and polymer fiber concrete technique in canal seepage control are introduced. The conclusions are drawn that conjunctive use of polyethylene geo-membrane, composed geo-membrane and other soft materials with rigid protection is a rational way of canal seepage control in jack frost areas at present; soil solidifier can react chemically or biologically with different species of soil, change soil texture and hydrophilic property, so it has wide application especially in the irrigation districts lacking of sand-and-stone; application of polymer fiber concrete in canal seepage control of irrigation district can prevent or reduce concrete fissure and has high anti-transmutation and enduring ability.