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1 问题的提出鲇鱼山灌区是河南省第三大自流型灌区,设计灌溉面积9.5万hm~2,受益人口110万人。灌区于1972年动土兴建,1976年建成通水。经过27年的运行,主体工程基本畅通,发挥了很大的社会效益与经济效益。鲇鱼山灌区属浅山、丘林型灌区,有总干、干渠、分干渠11条,总长302km,有大小渠下涵167座。据调查有半数以上渠下涵存在着不同程度的渗水、漏水、被破
1 PROBLEM PROBLEMS The Bayuishan Irrigation District is the third largest gravity irrigation area in Henan Province. The designed irrigated area is 95,000 hm 2, benefiting 1.1 million people. Irrigation area was built in 1972, completed in 1976 through the water. After 27 years of operation, the main project basically smooth, played a great social and economic benefits. Guiyuanshan Irrigation District is a shallow mountain, Qiu Lin-type irrigation area, with the total dry trunk, sub-main canal 11, a total length of 302km, with a size of canal under the Han-167. According to the survey, more than half of the drainage channels exist in different degrees of seepage, leakage and breakage