The Analysis on Stability of Stratified Surrounding Rock in the Tunneling Process

Abstract:

According to the unstable condition of the displaceable block and the breakage term of the stratified rock, this paper analyzed the stability of surrounding rock during the excavating process in different geological structures. And according to the relation between rock occurrence of the underground chamber and geometrical boundary of excavation, the paper gave the method to positioning breakage. Finally, by the analysis on the cause of collapse in engineering, evaluation on stability of surrounding rock in stratified rock was further tested.