以唐家湾东古滑坡为例,基于地质详勘资料,采用滑坡结构剖析、地形恢复反演、历史地震资料分析、动力有限元计算验证等手段,通过定性分析与定量计算相结合对该古滑坡成因进行详细阐述和论证;然后,结合影响斜坡稳定的各相关因素,对其现代复活机制和稳定性状态进行系统分析。结果表明:古地震是古滑坡产生的直接原因,其当前复活除了与固有地质背景和降雨条件有关外,人类工程活动(包括城镇建设和大坝蓄水)是最主要的直接诱发因素。 Taking Tangjiawan Dongkuang landslide as an example, based on the detailed geological survey data, this paper uses the methods of landslide structure analysis, terrain recovery inversion, historical seismic data analysis and dynamic finite element calculation and verification. Through the combination of qualitative analysis and quantitative calculation, The causes of landslide are elaborated and argued in detail. Then, combining with the related factors that affect the stability of the slope, the modern revival mechanism and the stability state are systematically analyzed. The results show that the ancient earthquakes are the direct cause of the ancient landslides, and the current resurrection is the most important direct inducing factor except for the inherent geological background and rainfall conditions, including human activities such as urban construction and dam water storage.