BEM-LEM Analysis and Monitoring of Unstable Slope During Reinforcement

摘要

Taking the excavation and reinforcement of an unstable slope as an example, the slope stability is analyzed firstly in this paper by boundary element method(BEM) combining with limit equilibrium method(LEM).The changing response of safety factor F_min of slope is known, and the relation between F_min and h, slope altitude, F_min =ah~b is drawn. Considering the relation between F_min and developing stages of sliding, dynamic stability state of sliding evolution is achieved. Based on the above results and sin-situ monitoring information,the deformation laws are analyzed, and the slide duration (if not reinforced)is forecasted successfully by united GM(1,1)-Verhulst grey model for the purpose of guiding the correct reinforcement.