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以高烈度区水库堆积层滑坡为研究对象,基于Geo-studio软件动力有限元法,分析了三类凸形堆积层滑坡在高低库水位运行条件下的地震动力响应特征和稳定性变化。结果表明,鞭梢效应对参量的影响程度大于竖向放大效应对参量的影响,对中凸形滑坡的加速度响应比上凸形与下凸形滑坡要大,上凸形滑坡的阶段位移响应峰值大于中、下凸形滑坡阶段位移峰值;凸形堆积层滑坡在高水位时对地震的响应要大,在所列库水位和0.05g地震动力条件下整体稳定性系数最大减小约0.037%,下凸形滑坡受此影响较大,且随库水位高度增加,地震加速度增加,整体稳定性系数减小程度增大。该分析结果对高烈度区水库堆积层滑坡灾害防治具有重要参考价值。
Based on Geo-studio software dynamic finite element method, the dynamic response characteristics and stability of three types of landslides with bumpy landslides under high and low reservoir water levels are analyzed. The results show that the influence of the whiplash effect on the parameters is larger than that of the vertical magnification effect, and the acceleration response of the medium convex landslide is larger than that of the upper convex and the lower convex landslide. The peak displacement of the upper convex landslide Which is larger than that of the middle and lower convex landslide. The response of the landslide to the earthquake is larger when the landslide of the buildup landslide is higher, and the overall stability coefficient decreases by about 0.037% under the condition of the reservoir water level and 0.05 g earthquake power, The lower convex landslide is greatly affected by this. With the increase of reservoir water level, the acceleration of earthquakes increases and the overall stability coefficient decreases. The results of this analysis are of great reference value for the prevention and control of landslides in reservoir area with high intensity.