全国重点危险水库之一的延安地区王瑶水库除险加固工程,12月上旬通过了竣工验收,并被评为优良工程。王瑶水库位于延河支流杏子河中游,距延安市65km,是以防洪为主,兼有灌溉、发电、供水等综合效益的大型水库,总库容2.03亿 m~3,建成于1972年。在1977年7月延安遭受大水灾时,王瑶水库有效地拦蓄了杏子河全部来水2600多万 m~3,大大减轻了延安市的洪灾损失。但是,由于工程设计标准低,施工质量差,长期不能正常运用。鉴于它位置重要,病害严重,国家防总将其列为全国重点危险水库,从1987年起,中央和地方共同投资进行除 Wang Yao Reservoir Reinforcement Project in Yan’an, one of the key dangerous reservoirs in China, passed the final inspection and acceptance in early December and was rated as Excellent Project. Located in the middle reach of Xingzi River, a tributary of Yanhe River, Wangyao Reservoir is 65km away from Yan’an City. It is a large reservoir with flood control, irrigation, power generation and water supply. Its total storage capacity is 203 million m 3, which was completed in 1972. When the flood in Yan’an in July 1977 suffered heavy floods, the Wangyao Reservoir effectively saved more than 26 million m3 of water from the Xingzi River and greatly reduced the flood loss in Yan’an City. However, due to low engineering design standards and poor construction quality, it can not be used normally for a long time. In view of its important location and serious disease, the National Defense Agency has listed it as one of the key dangerous reservoirs in the country. Since 1987, the central and local governments have jointly invested