某高速公路顺层软岩边坡开挖稳定性分析及支护方案研究

以贵州省某高速公路顺层边坡为例，在分析工程地质条件和开挖扰动的基础上，结合离散元软件UDEC，模拟开挖后边坡在未支护及支护条件下的稳定性和变形特征。结果表明，边坡开挖后，在未支护情况下，会发生沿岩层面的滑移破坏；采用锚索支护后，边坡变形得到了较好控制。根据研究结果，基于边坡变形特征、降雨影响等因素，提出综合防治建议。

Analysis for Excavation Stability of Bedding Soft Rock Slope of Some Expressway and Research on Supporting Scheme

With the bedding slope of some expressway in Guizhou Province as an example, based on analysis for engineering geological conditions and excavation disturbance and in combination with discrete element software UDEC, this paper simulates stability and deformation features of slope with and without support after excavation. The results show that sliding failure along rock stratum surface will occur to the slope after excavation in the case of no support; while after being supported with anchor ropes, slope deformation is well controlled. According to the research results, the paper proposes suggestions of comprehensive control based on factors such as deformation features of slope and influence of rainfall, etc.