Abstract：The stability of rock mass is a key issue in ensuring the safety of mine. Because the rock masses are situated in a complex geological environment with complicated components and structures，hydrogeological conditions，mining process etc.，its deformation presents the behaviors of complicated nonlinear and dynamic characteristics. Therefore，these complex behaviors of the rock mass should be described by the method of spatial agent model based on knowledge fusion technology. It could be used to analyze the stability of rock mass，and to study the adaptive behaviors of a complex system when external environment of the rock mass changes. The stability of rock mass is described in detail by the structure and property，the mechanism of self-study，and the integrated behaviors of the spatial agent. Finally，it is verified by the related theory and case study of a coal mine.
