Damage Fracture Model for Jointed Rockmass and its Application in Tunnel Engineering

摘要

According to damage fracture mechanism of Intermittently jointed rockmass, A damage fracture model simulating mechanical deformation properties of jointed rockmass has been established in this paper and a nonlinear FEM programme about the model is programmed. Utilizing changing plastic damage stiffness iteration method under multi-stage load, We apply the FEM programme to stability analysis for Shenzhen XIAWAN supply water tunnel under excavation and effectively guide tunnel construction by means of computation results.