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为精确模拟堆积体边坡变形破坏过程,根据堆积体所固有的非连续性、非均质性、各向异性等特点,以及边坡变形破坏的渐进性特征,采用改进的有限单元法(FEM)对堆积体边坡进行模拟。考虑堆积体边坡从连续位移函数到不连续位移函数的突变。破裂发生前,用连续位移函数进行计算;破裂发生后,引入不连续位移函数。研究结果表明,破裂面上不同点的安全系数(FOS)是不同的,但都随着破坏过程而降低。同时,可以得出不同非均匀程度下安全系数的概率分布。
In order to accurately simulate the deformation and failure process of the slope, the finite element method (FEM) is used to simulate the deformation and failure process of the slope. According to the characteristics of discontinuity, heterogeneity and anisotropy inherent in the pile body and the progressive features of slope deformation and failure, ) To simulate the slope of the pile body. Consider the abrupt change from the continuous displacement function to the discontinuous displacement function of the bank slope. Before the rupture, the displacement function was used to calculate the continuous; rupture occurred after the introduction of discontinuous displacement function. The results show that the safety factor (FOS) at different points on the fracture surface is different, but both decrease with the failure process. At the same time, we can draw the probability distribution of the safety factor under different non-uniform degree.