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王瑶水库,坝高55米,库容2.03亿立方米。该水库位于延安市上游60公里,位置重要,是我省重点防汛的大型水库,要求按可能最大洪水标准设防。水库泄洪洞自1980年建成以后,虽然具备了“底洞、大泄量”的排沙条件,由于未能及时研究制定合理的水沙调节运用方案,仅进行了几次滞洪排沙,效果不大。截止1984年底,累计库容淤积8500万立方米,占总库容的41.9％。年平均淤积量达到708万立方米,水库的防洪能力已经大幅度下降,这就成为延安人民十分关切的问题。 1985年5月,延安地区水利水保局召开了王瑶水库水沙调节运用方案学术讨论会
Wang Yao reservoir, dam 55 meters high, 203 million cubic meters of storage capacity. The reservoir is located 60 kilometers upstream of Yan’an City, the location is important, is a major flood control reservoir in our province, requiring the maximum possible flood standard fortification. After the completion of the flood spillway in the reservoir in 1980, it has had the sediment discharge conditions of “bottom hole and large discharge”. Only because of the failure to timely study and formulate a proper plan for water and sediment regulation, Big. As of the end of 1984, a total of 85 million cubic meters of sediment storage capacity, accounting for 41.9% of the total storage capacity. The average annual sediment volume reached 7.08 million cubic meters, and the flood control ability of the reservoir has dropped drastically. This has become a major concern for Yan’an people. In May 1985, Yan’an Prefecture Bureau of Water Conservancy and Water Conservation held a symposium on the application of water and sediment regulation in Wangyao Reservoir