【摘要】 针对白鹤滩水电站左岸边坡存在多个潜在滑动块体的问题,建立了左岸边坡的三维有限元计算模型,采用拟静力法、动力时程安全系数分析法和动力降强法研究了左岸边坡的主要块体和整体的动力稳定性。结果表明,以C3-1为底滑面的潜在滑动块体的动力稳定性能满足设计规范要求,而以LS337为底滑面的块体#1-1、#2和#3的动力稳定安全系数偏小,整体稳定安全系数亦偏低,需采取必要的加固措施。更多还原

【Abstract】 There are several potential sliding blocks in the slope of left bank at Baihetan Hydropower Station.By using quasi-static,dynamic time-history safety coefficient analysis and strength reduction methods,three-dimensional FEM calculation model of the slope is established to analyze the dynamic stability of the key blocks and the whole slope.The results show that the dynamic stability of potential sliding blocks with C3-1 as bottom slide face can meet the design requirement;both the dynamic stability safety factors of block #1-1,#2 and #3 and its whole stability safety factors with LS337 as bottom slide surface are less than that required.So the necessary reinforcing measures should be taken.更多还原