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通过工程地质学中的赤平投影原理对各个结构面产状进行统计分析,找出优势结构面组合,再对非确定位置的结构面按一定间距进行搜索,利用运动学分析方法对各个块体进行分析,确定出可能从坡体上滑出的块体。结合三维刚体极限平衡法,计算出各个可能块体组合在不同工况下的稳定系数,找出最危险滑块,进而对边坡进行稳定性评价,通过具体的工程实例进行了验证。结果表明,将工程地质学方法、运动学分析方法与刚体极限平衡法结合起来分析复杂岩质边坡可以提高边坡稳定性评价的准确性,对工程具有很好的指导意义。
Through the principle of stereoprojection in engineering geology, statistical analysis was made on the shape of each structural surface to find out the combination of dominant structural planes. Then the structural planes of non-defined positions were searched at certain intervals, and the kinematics analysis method was applied to each block Analyze and identify the blocks that may slip out of the slope. Combined with the limit equilibrium method of three-dimensional rigid body, the stability coefficient of each possible block combination under different working conditions is calculated, the most dangerous slide is found out, and then the stability of the slope is evaluated. The concrete engineering example is used to verify. The results show that combining engineering geology method, kinematic analysis method and rigid body limit equilibrium method to analyze complex rock slope can improve the accuracy of slope stability evaluation, which is of great guiding significance to the project.