Abstract: Displacement and deformation of surrounding rockmass of mining works can be caused by excavation in mine. If rock mass is effected by different excavations jointly, the stress of rockmass is influenced by all kinds of factors. In this paper an experimental method of friction model of bottom surface is used to study the mechanism for dynamic slide and deformation regularities of rockmass under firstly underground mining and then open pitting, so as to provide a scientific basis for design of continous mining and for dynamic analysis of slope rockmass.