论文部分内容阅读
大峡水电站位于甘肃省兰州市皋兰县和榆中县交界的黄河干流上,是龙羊峡至青铜峡河段梯级规划的第11个梯级。距兰州市中心河道距离65公里。坝址处多年平均流量1030米~3/秒。主要出露地层为前寒武系结晶片岩,致密坚硬,风化较浅,完整性好,透水性小,断裂结构规模不大,缓倾角结构面不太发育,裂隙中夹泥很少。地震基本烈度为七度。
Located on the main Yellow River at the junction of Gaolan County and Yuzhong County, Lanzhou City, Gansu Province, Daxia Hydropower Station is the eleventh step of the cascade plan from Longyangxia to Qingtongxia. Lanzhou city center from the river distance 65 km. Dam site for many years the average flow of 1030 m ~ 3 / sec. The main exposed strata are Precambrian crystalline schist, which are dense and hard, have a low degree of weathering, good integrity, small water permeability, small scale of fracture structure, less developed surface of gentle dip angle and little mud in cracks. The basic earthquake intensity is seven degrees.