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一、工程概况故县水库工程位于黄河支流洛河上的洛宁县境内,控制流域面积5370平方公里,主要任务是防洪、灌溉、发电。工程设计标准按千年洪水设计,万年洪水校核。最大坝高121米,坝长315米,库容12亿立米。混凝土重力坝,共分21坝段。右岸11~#～16~#坝段设有5孔13.5×15.6米开敞式溢洪道;10~#坝段设有2孔3.5×4.5米泄洪排沙底孔;左岸7~#～9~#坝段为电站引水管和厂房。右岸设有断面9×10米施工导流洞一条。工程于1979年开工兴建,1980年10月截流。原设计1981年渡汛采用过水围堰方案。当来水高于库水位463.0米时,围堰过水,淹没基坑,暂停施工。洪水过后,抽出基坑积水,再行施工。过水围堰只运用一个汛期。后因工期改变,上游围堰先后在1981年9月7日,1982年8月1日,1983年8月1日和10月5日共四次过水;过堰水深由2.8米至3.5米;过堰流量940～1300秒立米,总共过水147个小时,过水情况良好。
I. Project Overview The Guxian Reservoir Project is located in Luoning County, on the Luohe River, a tributary of the Yellow River. It controls an area of 5370 square kilometers and its main tasks are flood control, irrigation and power generation. Engineering design standards by Millennium flood design, years of flood checking. The maximum height of 121 meters dam, 315 meters long dam, storage capacity of 1.2 billion cubic meters. Concrete gravity dam, is divided into 21 sections. The right bank of 11 ~ # ~ 16 ~ # dam section with 5 holes 13.5 × 15.6 m open spillway; 10 ~ # dam section with 2 holes 3.5 × 4.5 m spillway sand bottom hole; left bank 7 ~ # ~ 9 ~ # Dam section of the power station and plant. The right bank has a section of 9 × 10 m construction diversion tunnel. The project started construction in 1979, and intercepted in October 1980. The original design of the flood crossing in 1981 adopted a cofferdam program. When the water is higher than the reservoir water level 463.0 meters, the cofferdams over water, flooding the foundation pit, the suspension of construction. After the flood, pumped pit water, and then construction. Water cofferdam only use a flood season. After the change of schedule, the upstream cofferdam successively passed the water four times on September 7, 1981, August 1, 1982, August 1, 1983 and October 5, 1983; the weir had a depth of 2.8 meters to 3.5 meters ; Over weir flow 940 ~ 1300 seconds of legislation, a total of 147 hours of water, water condition is good.