浙南公路上土下岩二元边坡稳定性规律数值模拟研究

Numerical Simulation on Stability of Soil and Rock Double Highway Slope in South Zhejiang Area

针对浙江省公路边坡类型多样、地质条件复杂的特点,选取多条浙南典型公路进行沿线边坡勘察,总结了浙南地区典型公路上土下岩二元边坡的地质特征。在此基础上,采用midas//Gts NX有限元软件建立了上土下岩二元边坡的数值模型,详细分析了模型边坡的稳定性与边坡坡度、上覆土层厚度、土体物理力学参数及降雨渗入深度的关系,基于分析结果提出了相关边坡参数的阈值,为复杂公路边坡稳定性判别及防控提供参考。

In view of the characteristics of various types and complex geological conditions of highway slopes in zhejiang province,this paper selects several typical roads in south zhejiang province to carry out the survey of the slopes along the road,and summarizes the geological characteristics of the soil and rock dual slopes on typical highway slopes in south zhejiang province. On this basis,using finite element software midas//Gts NX established the numerical model of rock soil under the dual slope,analyzes the model of the stability of slope and slope gradient,the thickness of the overburden,soil physical and mechanical parameters,and the relationship between the rainfall infiltration depth based on the results of the analysis put forward the related parameters of slope threshold,provide a reference for complex highway slope stability criterion and the prevention and control.