Abstract:The landslide with double sliding plane and rock-layer reverse exists in the nature universally. Taking Hanjiaya Landslide along Xiangfan—Shiyan Expressway for example,which has the representative characteristics of the landslide with double sliding plane and rock-layer reverse,many research methods such as in-situ investigation,physical simulation,in-situ monitoring,numerical simulation,etc.,are comprehensively adopted to analyze the basic characteristics,formation and development conditions,deformation and failure mechanisms of this kind of landslide. In order to expose the basic characteristics,form and development conditions of the landslide with double sliding plane and rock-layer reverse,various engineering geological methods are adopted,such as geological drilling,costeaning,trenching,geophysical survey,surface investigation,etc.. The positions and the basic characteristics of two slip surfaces and the front rock-layer reverse characters are ascertained by in-situ monitoring. Large-scale geomechanical model test and the technology of digital close-range photogrammetry are adopted to measure displacement field. The physical emulation is used to study the development,evolvement and formation processes in long geological history in laboratory and the gradual failure process of curvature and rupture on reverse rock-layer. Finite element method is adopted to calculate and analyze the deformation and failure mechanisms and the rock-layer reverse cause. The numerical simulation results and the practical ones,the in-situ monitoring and the physical simulation results coincide with each other. The research provides a scientific basis for mechanism study and treatment of the similar landslides.