断层抗剪强度对边坡安全系数敏感性分析

Sensitivity Analysis of Shear Strength of Fault to Slope Safety Factor

文中以新柳南高速K157+300~K157+500段边坡断层为研究对象,选取断层粘聚力和断层内摩擦角2个主要因素进行研究,应用Geoslope软件计算由以上两个不同因素组合而成水平下的边坡安全系数,再将稳定性计算结果导入数值分析软件SPSS进行双因素方差数值分析,研究两因素对边坡安全系数的敏感性。结果表明:断层粘聚力和断层内摩擦角是影响边坡安全系数至关重要的两个因素,并且断层内摩擦角对边坡安全系数的影响程度大于断层粘聚力。

In this paper, the slope fault of the high speed K157+300 ~ K157+500 section in xinliunan is taken as the research object. Two main factors, namely fault cohesion and fault friction Angle, are selected to study. Geoslope software is used to calculate the slope safety factor at the level combined by the above two factors. Then the stability calculation results were imported into the numerical analysis software SPSS for two-factor variance numerical analysis to study the sensitivity of two factors to the slope safety factor. The results show that the cohesion of the fault and the friction Angle of the fault are the two most important factors affecting the slope safety factor, and the friction Angle of the fault has a greater effect on the slope safety factor than the cohesion of the fault.