对山区高速公路中采用柔性生态挡墙防护进行了数值模拟,并对比分析了采用有限元强度折减法与极限平衡法计算得到的边坡稳定安全系数,结果表明,前者能较好地反映地基沉降及软弱土厚度的影响。同时,采用该数值模型分析加长挡墙底部筋材对边坡稳定性的影响,得出分级边坡存在一个安全系数控制值,并可通过减短上层筋带长度以节约工程造价。 The numerical simulation of the protection of the flexible ecological retaining wall in the mountainous expressway is carried out. The safety factor of slope stability calculated by the finite element strength reduction method and the limit equilibrium method is comparatively analyzed. The results show that the former can better reflect the settlement of the foundation And the impact of soft soil thickness. At the same time, the numerical model is used to analyze the influence of the bottom reinforcement on the stability of the slope. The result shows that there is a safety factor control value for the grade slope and the project cost can be saved by reducing the length of the upper reinforcement.