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我省山地丘陵占全省面积的90%左右,很多输水渠道(含灌溉渠道和发电引水渠道)是盘山开挖,渠线长、地形地质变化复杂、常常通过裂隙发育的岩层、风化土石及透水性大的土壤地段,水量渗漏损失很大,加上有些工程用水管理不善,渠系水的利用系数仅有0.3～0.4大量水源白白浪费掉,工程效益受到很大影响。为了解决水源不足和水量浪费的矛盾,我省已有不少输水渠道采取了砌石(块石、条石、河卵石、石板)、混凝土(预制板和现浇)、灰土(二合土和三合土)、粘土以
Mountainous hills in our province make up about 90% of the total area of the province. Many water transmission channels (including irrigation channels and power generation and diversion channels) are characterized by rock excavation, long drainage channels, complex terrain changes, rock formations often developed through fractures, Permeable soil lots, water loss is very large, with some poor water management, canal water utilization coefficient of only 0.3 to 0.4 a large number of water wasted, the project benefits have been greatly affected. In order to solve the contradiction between lack of water and waste of water, many water delivery channels in our province have adopted stone masonry (stone, stone, river pebble, stone), concrete (prefabricated and cast-in-place), lime And triptych), clay