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以高速公路建设中出现的大型古滑坡变形为案例,阐述了对大型多层滑动面的古滑坡稳定性量化计算和分析方法,并根据分析结果开展工程治理方案的讨论。古滑坡地形地貌变化较大,地质条件复杂,通过对古滑坡工程地质要素分析,再辅以深孔位移监测数据的分析和判断,是对大型古滑坡滑动分区、分层分析的重要手段和依据,为详细了解坡体的内部变形提供了有力的保障;同时,利用坡体变形发展情况,结合稳定性评估,采用反分析的量化计算方法,可有效地对坡体进行稳定性计算和加固工程设计。
Taking the deformation of large-scale ancient landslide occurring in the expressway construction as a case, the quantitative calculation and analysis method for the stability of ancient landslide with large multi-layer sliding surface is expounded. And the discussion of the project management scheme is discussed based on the analysis results. The landslides of ancient landslide vary widely and the geological conditions are complex. Through the analysis of the geological elements of the ancient landslide engineering and the analysis and judgment of deep hole displacement monitoring data, it is an important means and basis for the sliding zoning and stratification analysis of large ancient landslides. Which provides a powerful guarantee for the detailed understanding of the internal deformation of slopes. At the same time, with the development of slope deformation, combined with the stability assessment, the quantitative analysis method of back analysis can effectively calculate the slope stability and reinforce the engineering design .