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基于动态和整体强度折减法,运用ANSYS、FLAC3D构建模型,对西南某岩质边坡不同工况下的稳定性进行动态分析。结果表明,坡体易沿泥岩、砂岩层内节理裂隙产生滑坡等地质灾害;整体强度折减法得出的塑性区域过大,与实际情况不符,动态强度折减法得出的塑性区域与实际情况相符;坡体在自然条件下较为稳定,但在降雨条件下边坡安全系数小于极限值,有发生失稳的危险。
Based on the dynamic and overall strength reduction method, ANSYS and FLAC3D building models are used to analyze the stability of a rocky slope in different conditions in southwest China. The results show that the slope is prone to geological disasters such as landslides along the joints and fractures in the mudstone and sandstone. The plastic region obtained by the overall strength reduction method is too large, which is inconsistent with the actual situation. The plastic region obtained by the dynamic strength reduction method agrees with the actual situation The slope body is stable under natural conditions, but the slope safety factor under rainfall is less than the limit value, which may cause the instability.