基于滑移线簇分析的边坡极限平衡有限差分法研究

Application of Limit Equilibrium Finite Difference Method in Slope Engineering Based on Slip-line Cluster Analysis

将有限差分数值计算结果同刚体极限平衡分析方法相结合进行边坡稳定性评价,在工程实践中具有较好的理论及应用价值。基于该思想,将滑移线理论引入边坡滑弧的确定中,采用综合极限平衡方法计算其安全系数,建立安全系数与滑移线的函数关系,实现了最危险滑弧的搜索,并由算例验证了各力学参数对边坡滑面位置与安全系数的影响。结果表明,岩土介质的强度与变形参数对边坡稳定与滑面位置均有影响。该方法是现有边坡稳定计算体系的有效补充。

The numerical result of limit difference method is combined with rigid limit equilibrium method to evaluate slope stability, which is a better theory and applications in engineering practice. Based on this idea, the slip line theory into slippery slope to determine the arc, the comprehensive limit equilibrium method to calculate the factor of safety, the safety factor to establish a functional relationship with the slip lines, to achieve the most dangerous slip surface search, and based on examples show the influence of various parameters on the position of the mechanical slip surface with safety factor of the slope. The results showed that the strength and deformation parameters of rock media have an impact on slope stability and slip surfaces. This method is an effective complement to existing slope stability calculation system.