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一、概述龙羊峡水电站工程位于青海省共和县境内,系黄河上游的“龙头”电站。水电站装机总容量为1,280MW,年发电量为60亿kw·h。电站大坝为重力拱坝,高178m,最大底宽为80m,顶宽为15m。在基础开挖中,边坡高差为163m(从基坑底部高程2432.0m至上部岩顶高程2595.0m),上下游开挖边坡设计径向比为3∶1,大坝开挖基础面呈连续偏向上游的
I. Introduction Longyangxia Hydropower Project is located in Gonghe County, Qinghai Province, the Yellow River upper reaches of the “leading” power station. The installed capacity of hydropower stations is 1,280MW and the annual generating capacity is 6 billion kw · h. The dam is a gravity arch dam with a height of 178m, a maximum bottom width of 80m and a top width of 15m. In the foundation excavation, the slope elevation is 163m (from the bottom of the foundation pit elevation of 2432.0m to the top of the rock crest elevation of 2595.0m), the radial ratio of the upstream and downstream excavation slope design is 3: 1, and the foundation excavation Was continuously biased upstream