向家坡滑坡稳定性分析探讨

Application of a New Constitutive Model in the Mitigation of Xiangjiapo Landslide

长期以来边坡稳定性分析多采用的是极限状态理论,近来一种新的稳定性分析方法(边坡渐进破坏稳定性分析法)被提出,以向家坡边坡治理为实例,分别研究了传统的不平衡推力法和边坡渐进破坏稳定性分析法中的主推力法在治理中的应用。传统的不平衡推力法只能描述前阶段的破坏过程,而主推力法可以描述滑坡的破坏全过程。研究结果表明:主推力法和不平衡推力法能够应用于工程实践,其中,主推力法更能描述边坡的渐进演化破坏特征。

Limit equilibrium method is a major analytical tool for the slope stability projects.Recently,an innovative approach to the slope stability problems,which is called progressive failure analysis method,has been proposed.This paper presents the comparative evaluations of Xiangjiapo Landslide by using the conventional and new methods.The conventional method could only describe the earlier portion of slope instability but the new method could characterize the entire progressive failure of a landslide.The results conclude that both the conventional and the new method can be used in the engineering practice and the new method has the advantage of characterizing the entire progressive failure of a landslide.