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渠道防渗对解决水资源不足的问题有着极其重要的作用。渠道防渗技术越来越为人们所重视。贵州地处云贵高原,沟谷纵横,山峦重叠。山地面积占全省面积的87％;碳酸盐岩类地层分布面广,占全省面积的73％,耕地分散,灌溉渠道小而长且石渠多,渗漏是山区渠道的一大问题。近几年渠道防渗有了较大发展,全省每年安排小(二)型以上农田水利工程改造配套渠道防渗衬砌约1,200公里,投资2,000多万元。群众投劳进行渠道防渗衬砌(0.1秒立方米以下渠道),每年约800公里。贵州渠道防渗坚持就地取材的原则,主要有以下几种型式: 一、浆砌石作渠道防渗衬砌
Seepage prevention channel to solve the problem of insufficient water resources has an extremely important role. Seepage control technology more and more people pay attention to. Guizhou is located in the Yunnan-Guizhou Plateau, vertical and horizontal valleys, mountains overlap. Mountainous area accounts for 87% of the province’s area; carbonate rock strata are widely distributed, accounting for 73% of the province’s area, scattered arable land, small and long irrigation channels and stone canals, leakage is a major problem in mountain channels . In recent years, there has been a great development in channel seepage prevention. The province allocates about 1,200 kilometers of anti-seepage linings for auxiliary irrigation channels for small farmlands (over two types) each year and invests more than 20 million yuan. The masses engaged in labor-intensive anti-seepage lining (0.1 cubic meters of the following channels), about 800 km per year. Guizhou channel seepage control adhere to the principle of local materials, mainly in the following types: First, the masonry as a channel impermeable lining