贵州岩溶区反倾边坡危岩体稳定性分析——以六盘水某一中学危岩为例

Stability Analysis of Toppling Rock Slope of Hanging Rock Mass in Karst Area of Guizhou——Hanging Rock of a High School in Liupanshui as an Example

危岩是贵州主要的地质灾害之一,为促进贵州岩溶区危岩体的防治工作,以六盘水市某一中学教学楼后侧的危岩体为例,在危岩体所处的工程地质概况、危岩体边坡基本特征、危岩的主控因素3方面的基础上分析出危岩的变形破坏模式。然后通过赤平投影定性分析和极限平衡法定量计算危岩的稳定性,并用二维有限元分析方法对其进行了验证。结果表明,该危岩天然状况下处于基本稳定状态,暴雨状况下处于欠稳定状态。

Hanging rock masses is one of the main geological disaster in guizhou,In order to promote prevention and treatment of hanging rock masses in guizhou karst area,A high school in liupanshui city of hanging rock mass in the back building as an example,Dangerous rock mass in a general situation of the engineering geology and basic characteristics of rock mass slope,the three aspects of the main control factors of the dangerous rock on the basis of analysis of dangerous rock deformation failure mode. And then through the plane projection of qualitative analysis and quantitative calculation of limit equilibrium method of dangerous rock stability,and two-dimensional finite element analysis method is verified. Results show that the hanging rock under natural condition in stable state,the rainstorm condition in the unstable state.