考虑残余强度的动态强度双折减系数法研究

Study on dynamic strength double reduction factor method considering residual strength

由于岩体材料具有非均质、各向异性和不连续性等特性,导致岩质边坡稳定性分析存在诸多待完善的地方.本文通过对岩体的强度折减系数—SRFi和SRFj间的关系进行理论研究,以实现将双折减系数法转换为由其中某一个折减系数控制的单折减系数法,极大的简化了数值模拟的操作过程.为了分析岩质边坡的稳定性,本文提出了考虑残余强度的动态强度双折减系数法来动态观察边坡潜在滑带的拓展过程.本文的研究成果可解决边坡稳定性预测问题、为岩质边坡工程的设计提供基础和依据.

The stability analysis of rock slope has many places to be improved because the rock mass material has the characteristics of heterogeneity,anisotropy and discontinuity. In this paper,the relationship between the strength reduction factor of rock mass is studied theoretically. The results show that a single reduction factor method,which converts the double reduction factor method to one of the reduction coefficients,is realized,which greatly simplifies the operation of numerical simulation. In addition,this paper presents a dynamic strength double reduction factor method considering residual strength to dynamically observe the development of potential slip zones on the slopes. The research results show that it can solve the problem of slope stability prediction and provide the basis and basis for the design of rock slope engineering.