骊山明圣宫滑坡侵蚀运动过程仿真

在地质调查及边坡岩体结构分析的基础上,对滑坡侵蚀的地质背景及工程地质条件进行了详细的研究。应用极限平衡法进行了稳定性计算,发现明圣宫滑坡侵蚀体处于临界—不稳定状态。利用离散元建立了计算模型,对明圣宫滑坡侵蚀滑动后的运动过程进行仿真模拟。采用离散单元法对滑坡侵蚀运动过程中各演化阶段的平均速度、平均加速度,滑坡侵蚀体后缘、中部、前缘的合力、合力矩进行了分析研究,由此可将滑坡的演化过程划分为4个运动阶段:启动加速阶段、减速运动阶段、振荡运动阶段、减速缓动阶段。

Evolution Process Analog of Mingshenggong Landslide Erosion on Lishan Mountain with Discrete Element Method

On the basis of geological exploration and rock structure analysis of the slope,the geological background and engineering conditions were researched especially.By calculating with limit equilibrium method,it is suggested that Mingshenggong Landslide Erosion is on the critical to unstable state.Then discrete element model was set up to analog the supposed sliding process,and the average velocity,average acceleration,composite forces and composite moment in back,middle and forth of the erosion's landslide in each stages of evolution are analyzed and studied as well,which represent that the evolution process of landslide could be recognized into four periods: beginning period,accelerating period,quick-moving period,bumping-deceleration and braking period.