
基于改进颗粒流的数值模拟方法,建立反倾斜坡土体参数的空间变异性模型,研究土体参数空间变异性对反倾斜坡变形演化过程的影响,对比分析确定性反倾斜坡变形演化和随机场理论反倾斜坡变形演化特征。结果表明:反倾斜坡变形演化分为坡脚初始剪切破坏、剪断面贯通坡体、倾倒破坏起始3个关键节点;土体参数的空间变异性导致反倾斜坡的破坏速度增加,坡脚裂缝和剪断面贯通速度加快;土体参数的空间变异性还使反倾斜坡的前缘和后缘破坏深度增加,而对剪切破坏面与节理面法向夹角、后缘张拉角的影响较小。
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