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在建的鲁布革水电站地下厂房,跨度18米,高34米,长120米,为大跨度、高边墙地下洞室。其空间位置的选择、轴向的确定及围岩稳定性的评价,对整个厂区枢纽地下工程具有控制意义。在选厂阶段(初设第一期),曾比较了地面厂房、小山包地下厂房和空岩梁子地下厂房三个方案(图1),经分析比较最后选定了空岩梁子地下厂房。该厂区为T(~1_2g)灰质白云岩、角砾状灰质白云岩及T_1y白云质灰岩,山体雄厚,且距F_203断层较远,岩体较坚硬、完整,建厂条件优
Under construction in the Lubuge Hydropower Station underground plant, span 18 meters, 34 meters high, 120 meters long, for the long-span, high-wall underground caverns. The choice of its spatial location, axial determination and the stability of surrounding rock evaluation of the entire plant hub underground engineering has control significance. In the process of plant selection (first phase), three plans (Figure 1) were compared for the underground plant of the ground plant, the Xiaoshanba underground plant and the Kongliangliangzi underground plant. After the analysis and comparison, the underground plant of Kongliangliangzi was finally selected. The plant is T (~ 1_2g) gray dolomite, brecciated gray dolomite and T_1y dolomitic limestone. The mountain is rich and far away from the F_203 fault. The rock mass is hard and complete, and the construction conditions are excellent