Anisotropic numerical analysis on failure modes of dip layered rock slopes and engineering application

摘要

Layered rock slope failure is a vital problem in the geotechnical engineering.Based on the equivalent continuum and the compound material mechanics, the layered rock mass is treated as an anisotropic elastic medium.Then, the failure modes of slopes with layered rocks have been studied by numerical simulation using COMSOL software.Numerical results show that the damage zone of the slope first increases then decreases with the increase of layered structural plane angle θ.When θ =30°, the slope is most easily to destroy.Moreover, the proposed numerical method is applied in Sijiaying iron mine and the results are in good agreement with the actual failure.The successful application shows that the proposed method is reasonable and feasible for the simulation of failure modes of such layered rock slopes.