洪家渡水电站左岸地下洞室进口边坡稳定初步分析

Stability Initial Analysis on Intakes' Side of Underground Cave Rooms on The Left Bank of Hongjiadu Hydropower Station

利用岩体结构面网络模拟和Hork -Brown经验估算方法 ,综合分析确定乌江洪家渡水电站地下洞室进口边坡岩体的综合强度 ,对边坡的整体稳定进行了极限平衡分析计算 ,初步认为施工期边坡基本处于稳定状态 ,但运行期其安全系数小于 1 0 ,需对其进行深入研究。

Using rock body structure face network imitation, and Hork-Brown's empirical estimation method, the writer has defined the synthetic intensity of side rock body of the underground cave rooms' intakes of Hongjiadu Hydropower Station on the foundation of comprehensive analysis, calculated to whole stability of side slope using limit balance method. Initial calculation indicates that the side slope is in stable state basically during construction period, but its safety coefficient is smaller than 1 0. in operation period, and this question need to research deeply.