RESEARCH ON DYNAMIC DAMAGE PROPERTIES OF JOINTED ROCKMASS IN SURROUNDING STRATA
裂隙隧道围岩动态损伤特性分析

On the basis of analyzing the effect of the drilling-blasing operation on surrounding rocks of tunnel, the damage evolution model is introduced. The effect of dynamic load resulting from blasting operation is simulated, and the breaking state of surrounding rocks may be predicted effectively in different cases. The effective support scheme in initial excavating period is determined, too. An effective method is proposed to determine setting load and selecting support scheme of TBM operation in jointed surrounding rocks.