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1.渠道防渗的重要性及作用渠道防渗技术就是采用工艺或工程措施,减少渠床的透水性以提高水的利用率,减少渗漏水量,提高渠道输水能力的各种技术和方法的总称。输水渠道渗漏是浪费水的主要方面,目前我国旱地和水田的灌溉引水量为3445亿m~3,而有效利用率只有40%,据统计,渠系输水损失为1730亿m~3,占渠首总引水量的50%,也就是说渠道输水损失占灌溉总损失的80%以上。目前,我国渠道
1. The importance of canal seepage control and role of Canal seepage control technology is the use of process or engineering measures to reduce the permeability of the canal bed to improve water utilization, reduce leakage of water, improve channel water delivery capabilities of various technologies and methods The general term. Water leakage is the main aspect of wasting water. At present, the irrigated water amount of dry land and paddy field in China is 3,445 billion m 3, while the effective utilization rate is only 40%. According to statistics, the loss of water conveyance in canal system is 173 billion m 3 Accounting for 50% of total canal water diversion, which means that channel water loss accounts for more than 80% of total irrigation losses. At present, China’s channels