经验强度准则对岩坡稳定性分析SARAMA法的改进

Modified Sarama Non-vertical Slice Method for Stability Analysis of Rock Slope with Hoek-Brown Strength Criterion

在介绍J .Bray推导的抗剪强度计算方法的基础上 ,简单阐述了基于经验强度准则改进的Sarama法进行岩坡稳定性分析的步骤。最后 ,以雅砻江锦屏水电站某边坡为例 ,说明其计算要点 ,并将Sarama法与改进Sarama法计算结果比较 ,以此分析了导致二者计算结果有明显差异的原因。

Sarama non-vertical slice method is a famous analysis method for rock slope stability, which is widely used in engineering all over the world. On the basis of introducing the method calculating shear strength parameters with Hoek-Brown strength criterion, the modified Sarama method put forward by E. Hoek at first and the steps determining the factor of stability are introduced. In order to explain the method clearly, a rock slope engineering, which lies in Jinping hydropower station, Yalong River is offered in the paper. Finally, the causes bringing out the difference of safety factors obtained between Sarama method and the improved Sarama method are analyzed.