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渠道防渗,是挖潜节流和建设高产稳产农田的一项重要措施。为了充分利用水利资源,提高渠水的利用率,在1979年选定二千二分渠,采用水泥土,结合混凝土预制板衬砌进行了防渗试验,经过几年应用基本是成功的。二干二分渠全长九公里,大部份属填方渠道,土壤为粉质粘土,正常引用流量1.2米~3/秒,设计灌溉面积一万二千余亩,衬砌前渠道坍塌、淤塞、漏水严重,灌溉面积逐年减少。渠道衬砌长六公里,其中整体现浇水泥土0.5公里,混凝土预制板衬砌5.5公里,
Anti-seepage channels, is to tap the potential savings and building high-yield stable farmland is an important measure. In order to make full use of water conservancy resources and improve the utilization rate of canal water, we selected 2,292 ditches in 1979 and conducted anti-seepage tests using cement soil and concrete precast slab lining. After several years of application, the application was basically successful. The second and second sub-channels are nine kilometers in length, most of which belong to the filling channel. The soil is silty clay. The normal quoted flow rate is 1.2-3 m / s. Irrigation area of over 12,000 mu is designed. Collapsing, Severe water leakage, irrigation area decreased year by year. Channel lining six kilometers long, of which the overall 0.5 kilometers of poured concrete, 5.5 km of concrete precast slab lining,