Abstract:The processes of rock excavation and slope formation of open-pit mine are simulated by physical simulation aimed at complicated geological conditions strip mine,and the displacements movement of rock mass are observed ever and again in this paper. The displacements and deformation caused by excavation are observed and analyzed;and the displacement laws of slope rock mass are gained during the disturbance process. Furthermore,the mode of the slope breakage is held by and large,the dynamic characters and the primary causation of the slope are discussed. The influence mode of slope breakage by geological structure is educed. The model of idiographic engineering geology is put forward for the open-pit mine.