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针对采用传统的确定性边坡稳定性分析方法进行滑裂面抗剪强度参数反演分析所需滑坡断面不少于两个的不足,基于概率可靠度理论,提出了一种结合Excel数据表和极限分析上限法的滑坡强度参数反演新方法。依托湘西朱雀洞特大滑坡进行算例分析,研究结果表明:结合Excel数据表法和极限分析上限法反演得到的滑裂面抗剪强度参数与工程现场实测数据吻合良好,验证了新分析方法的正确性和有效性;运用该法反演分析只需一个滑坡断面,可有效解决单一滑裂面抗剪强度参数反演问题,减少了计算工作量,具有广泛的适用性和良好的工程应用前景。
In view of the traditional method of deterministic slope stability analysis, the landslide cross section required for the back analysis of the shear strength parameters of the sliding surface is not less than two. According to the theory of probability reliability, an Excel data table A New Method for Inversion of Landslide Intensity Parameter by Upper Limit Analysis Limiting. Based on the case study of the Zhukuang Cave landslide in western Hunan Province, the results show that the shear-strength parameters of the slip surface obtained by the Excel data table method and the upper bound method of the limit analysis are in good agreement with the measured data of the project site, Correctness and validity of this method. Only one landslide cross-section can be obtained by this method, which can effectively solve the problem of inverse shear strength parameters of a single slip surface, reduce the computational workload, have a wide range of applicability and good prospect of engineering application .