通过渠道防渗,减少输水损失,是大中型灌区实行节水灌溉的重要措施。渠道采取防渗措施后,在不同的流量下,每公里防渗渠道输水损失将减少多少?经济上是否合算?我们通过对华南地区渠道防渗的实践,做了一些研究和探讨。 一 1975年,由广东省水利电力局编写的《农田水利工程》一书中介绍渠道渗漏量的推算。认为要较准确推算 Seepage through the channel to reduce water losses is an important measure to implement water-saving irrigation in large and medium-sized irrigation districts. After anti-seepage measures are taken in the channels, how much water loss will be reduced per kilometer of anti-seepage channels at different flow rates? Is it economically advantageous? We have done some research and discussion on the anti-seepage measures through channels in southern China. In 1975, by the Guangdong Provincial Water Power Authority prepared “farmland water conservancy project,” a book describes the calculation of canal leakage. Think to more accurate projections