论文部分内容阅读
在工程地质勘察的基础上,通过建立边坡地质结构模型,用模拟重力场条件的底摩擦模型试验、二维离散元和有限元相结合的方法,研究了雅砻江甲西滑坡的变形破坏过程及影响因素。结果表明,甲西滑坡的变形破坏模式为逆向层状结构岩体向临空面倾倒弯曲、层间相互错动形成贯通拉裂缝失稳下滑的典型倾倒弯曲-拉裂式。滑坡形成的主要因素为,在暴雨等作用下中-陡倾层状岩体、高陡坡型、河谷下切临空条件及倾外节理发育有发生滑动复活的可能。
Based on the engineering geological survey, the deformation and failure process of the Xixi landslide in the Yalong River was studied through the establishment of the slope geological structure model, the bottom friction model test simulating the gravity field conditions, the two-dimensional discrete element and the finite element method And influencing factors. The results show that the deformation and failure mode of the Ksi-landslide is that the reverse stratified rock mass collapses to the free surface, and the layers are staggered to each other to form a typical dumping bending-pulling failure of the through-fracture. The main factor of landslide formation is the possibility of slipping resurrection of medium-steep layered rock mass, high steep slope type, undercut condition of the river valley and development of dip-out joint under the action of heavy rainfall.