地震作用下云南某水库边坡动力学响应分析

Dynamic response analysis of a reservoir slope under earthquake in Yunnan Province

由于地震对滑坡发生的重大影响,文中针对地震作用下某水库边坡进行动力学响应分析,通过有限元软件对水库边坡进行二维数值模拟,利用时间历程分析的方法,在导入实际地震波后,通过对比分析地震后的边坡上设定的4个典型记录点x、y方向位移时程曲线图,地震后位移等值线图。结果表明:边坡中部土层、中部与上部土层交界区域均处于薄弱状态,需要对该区域采取相应的防治措施。通过实例可以为今后的水库滑坡防治提供参考与借鉴作用。

Due to the great influence of earthquake on landslide occurrence,this paper analyses the dynamic response of a reservoir slope under earthquake effect,and the two-dimensional numerical simulation of reservoir slope is carried out by finite element software.By using the time history analysis method,after the actual seismic wave is introduced,the displacement time history curve diagrams of X and Y directions of four typical recording points on the slope after earthquake are compared and analyzed.The displacement contour diagrams after the earthquake are also compared and analyzed.The result shows that the soil layer in the middle of the slope and the boundary area between the middle and upper soil layers are all in a weak state,and corresponding prevention treatment should be carried out in this area.The example can provide a reference for the prevention and controlling of reservoir landslide in the future.