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1 前言渠道防渗俗称渠道三面光或渠道硬化,是减少渠道输水渗漏损失,提高渠系水利用系数的工程措施,也是节约灌溉用水,降低灌溉成本的主要途径。建国50年来,邕宁县人民发扬自力更生,艰苦创业的精神,建成了大批水利工程,666.7hm~2(万亩)以上灌区就有15个,灌溉渠道总长为3700km,流量3m~3/s以上的渠道155.87km。这些渠道已运行数十年,因年久失修,淤积、崩塌、缺口相当严重,渠系水利用系数相当低,有的甚至达不到0.50。所以,十分必要对灌溉渠道进行防渗。2 渠道防渗建设完成情况邕宁县在1998年冬修水利建设中,认真总结经验教训,切实贯彻实施“科技兴水”的发展战略,大力推广
1 Preface The canal seepage control commonly known as the channel three sides light or channel hardening, is to reduce the canal water seepage losses, improve canal water utilization coefficient engineering measures, but also to save irrigation water and reduce irrigation costs the main way. In the 50 years since the founding of the People’s Republic of China, people in Suining County have carried forward the spirit of self-reliance and arduous pioneering and built a large number of water conservancy projects. There are 15 irrigation areas above 666.7hm ~ 2 (mu), total irrigation channel length is 3700km and flow rate is above 3m 3 / s Channel 155.87km. These channels have been in operation for several decades. As a result of disrepair, siltation, collapse and serious shortage of gaps, the canal water use factor is quite low, and some even reach less than 0.50. Therefore, it is very necessary to seepage prevention of irrigation channels. 2 Channel Impervious Construction Completion Suining County in earnest in winter water construction in 1998, conscientiously sum up experiences and lessons, earnestly implement the “science and technology Xing water ” development strategy, vigorously promote