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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。
In view of the existence of a number of potential sliding blocks on the left bank slope of Baihetan Hydropower Station, a three-dimensional finite element model of left bank slope is established. By using pseudo-static method, dynamic time-history safety factor analysis method and dynamic reduction method, The main block of the slope and the overall dynamic stability. The results show that the dynamic stability of the potential sliding block with C3-1 as the base sliding surface can meet the design specifications, while the dynamic stability safety coefficient of blocks # 1-1, # 2 and # 3 with LS337 as the base sliding surface Too small, the overall stability of the safety factor is also low, the need to take the necessary reinforcement measures.