边坡开挖松弛区划分及参数敏感度分析  

Slope Excavation Laxity Section Classification and Parameter Sensitivity Analysis

作　　者：袁继国[1] 符贵军[1] 

机构地区：[1]西安理工大学土木建筑工程学院,陕西西安710048

出　　处：《西安理工大学学报》2013年第3期301-306,共6页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(05JS34)

摘　　要：边坡稳定与人工开挖形成的扰动区有关,合理地确定松弛区对边坡的稳定性评价及整治有重要意义。结合工程实例,采用有限元法对边坡的分级开挖进行模拟,揭示了开挖对坡体的影响机理,运用萨尔玛(sarma)法对影响边坡稳定的因素进行了敏感性分析。结果表明,坡体按水平位移可以划分为松弛区、变形区和衰减区,结构面粘聚力影响大于其摩擦角。The slope stability is related with the disturbed zone formed by artificial excavation. Rational determination of the disturbed zone is of great importance for qualified assessment and control of slopes＇ stability. In combination with practical engineering examples, the finite element method is adopted to simulate the grade excavation, whereby revealing that excavation can have the effect upon the mechanism of damaging. Sarma method is used to carry out the sensitivity analysis of the factors affecting the slope stability. The results indicate that slope can be classified tion zone in accordance with the horizonal displacement, important than friction angle. into laxity zone, deformation zone and denuda- and the cohesion of structural surface is more

关 键 词：边坡开挖 松弛区 萨尔玛法 敏感度 

分 类 号：TD824[矿业工程—煤矿开采]