基于耦合的某变电站边坡变形破坏过程研究

Study on deformation and failure process of substation fill slope based on continuous-discrete coupling

以某变电站边坡为研究对象,考虑边坡工程地质条件,边坡残坡积层采用离散元模型,下方砂岩采用有限单元模型,建立边坡三维数值分析模型,研究该斜坡变形破坏过程,分析残坡积层和基岩层在各时步下的变形特征,并监测得到边坡不同部位处形变量大小,然后与现场监测结果进行对比分析,验证了耦合数值计算的可靠性,耦合模型具有运算快捷的特点,可有效将两种数值计算方法优劣互补。

Taking the slope of a substation as the research object and considering the engineering geological conditions of the slope, the slope are set as discrete element and finite element models, then a three-dimensional numerical analysis model of the slope is established. The deformation and failure process of the slope was studied, and the deformation characteristics of the residual soil layer and bedrock layer were analyzed at different times steps, and the size of the shape variables at different parts of the slope was monitored, and then compared with the field monitoring results. Which verifies the reliability of the coupled numerical calculation. In addition, the coupling model has the characteristics of fast operation and can effectively complement the advantages and disadvantages of the two numerical calculation methods.