Abstract: By using a Rock Failure Process Analysis Code RFPA2D, the deformation and failure behavior of a double rock sample system w ere studied numerically. The result swere compared with an experiment result with a similar setup of the double sample system (Marblegranite sample system). Based on the studies, the precursors prior to the main-shock in the real geological system composed by the failure area and the no-failure area are explained theoretically, including the seismic migration and the deformation localization. As far as the studies of earthquake, rock burst or failure phenomena in other geo-materials, it is concluded from this study that it is of the same importance to study the behavior in elastic rebound zone as to study the behavior in unstable failure zone.

Key words: Numerical simulation, Deformation failure, AE ratio, Interaction