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渠道防渗是水利工程挖潜的重要措施。实践证明,有衬砌的渠道比没有衬砌的渠道有如下优点:(1)可大量省水,以同样的水源,可灌更大的面积;(2)对提水灌区还可节
Seepage prevention of channels is an important measure to tap the potential of water conservancy projects. Practice has proved that lining the channel than the lining of the channel has the following advantages: (1) can save a lot of water, with the same water source, irrigation larger area; (2)