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库水位变动是造成水库滑坡的一个重要原因.选取了西部某库区滑坡堆积体作为研究对象,应用FLAD 3D软件分析了蓄水前天然工况、正常蓄水位工况及水位骤降工况的稳定性.通过对比3种工况的塑性区、最大位移、安全系数分析了库水位变动对堆积体稳定性的影响.结果发现:在水位骤降工况下稳定系数大幅下降,但仅对局部造成影响.
The change of reservoir water level is one of the important reasons for the landslide of reservoirs.Selecting the landslide stacks in a reservoir area of western China as the research object, the natural conditions before water storage, the conditions of normal water level and the sudden drop of water level are analyzed using FLAD 3D software The stability of the pile body is analyzed by comparing the plastic zone, the maximum displacement and the safety factor of the three kinds of working conditions.The results show that the stability coefficient drops sharply under the sudden drop of water level, Local effects.