基于强度折减法对水电站坝头边坡稳定性分析

首先对利用有限差分强度折减法判断边坡失稳的准则进行了分析,以某拟建水电站坝头岩石高边坡变形体为实例,在现场勘察的基础上,利用Flac3D数值模拟对该高边坡蓄水前后的稳定性进行了分析,并利用强度折减法求出安全系数。结果表明,实例高边坡在蓄水前后整体上处于稳定,另外验证了利用有限差分强度折减法可以定量地解决岩体边坡的稳定问题。

Application of strength - reducing method to stability analysis of head dam

In this paper,the finite difference strength reduction criteria was used to determine slope failure analysis.Taking the high rock slope in the head of dam for the example,Flac3D was used to analysis the high slope stability before and after water based on the basis of Survey.The safety coefficient was solved by using the strength reducing method.The results showed that the high slope is stability and finite difference strength reduction can resolve quantitative rock slope stability problems.