基于矢量和法的三维边坡滑面搜索研究

Critical Slip Surface of Three Dimensional Slope Based on Vector Sum Method

基于矢量和法的分析理论,进行了三维边坡临界滑动面的搜索研究。用数值方法求得边坡应力场后,通过矢量和法稳定性分析程序及滑面搜索程序,求解了三维边坡的临界滑面问题。对比研究发现:在二维情形下,利用矢量和分析理论对极限平衡法的临界滑面进行求解的结果与对其自身临界滑面进行求解的结果比较接近;三维情形下,通过滑面搜索能得到更加准确的稳定性分析结果。

Based on the theory of vector sum method,the critical slip surface of three-dimensional slope has been analyzed in this paper. The stress field of slope has been obtained by numerical method,a stability analysis program and slip surface searching program of vector sum method is adopted to solve the critical surface problem of three-dimensional slope. Through the comparative study,it is found that the solutions of two - dimensional slope obtained by vector sum method are similar for critical slip surface of limit equilibrium method and vector sum method. When comes to three-dimensional cases,it is expected to get more accurate analysis results through searching critical slip surface.