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基于随机场理论和非饱和渗流理论,通过对某一假想边坡在降雨条件下进行非饱和渗流分析和边坡稳定性分析,研究了在不同降雨强度下土体饱和渗透系数的空间变异性对边坡稳定性的影响.分析结果表明,随着降雨强度的增加,边坡稳定性降低,临界降雨强度与饱和渗透系数有关.饱和渗透系数的竖向波动尺度对边坡稳定性影响较大,目前采用确定性分析方法对渗流过程模拟存在风险.
Based on the random field theory and unsaturated seepage theory, the spatial variability of soil saturated permeability coefficient under different rainfall intensities was studied by analyzing the unsaturated seepage flow and the slope stability of a hypothetical slope under rainfall conditions Slope stability.The results show that with the increase of rainfall intensity, the slope stability decreases and the critical rainfall intensity is related to the saturation permeability coefficient.The vertical fluctuation scale of saturated permeability coefficient has a great influence on the slope stability, At present, the method of deterministic analysis is used to simulate the seepage process.