RESEARCH PROGRESSES AND PROSPECTS IN THE DEFORMATION-FAILURE MECHANISMS OF JOINTED ROCKMASS UNDER EARTH-QUAKE ACTION

Jointed rockmass is common in the southwestern mountain area, which is also a earthquake-prone area. Strong earthquake and jointed rock mass structure are the two main factors of geological disasters in the near field of Wenchuan earthquake. The coupling of the factors makes complex causes of landslides along Minjiang triggered by earthquake and difficult research process of landslides. Furthermore, due to the complexity of jointed rock mass and early lack of understanding of seismic P-wave, there is none research progresses made in deformation-failure mechanisms under strong P-wave. Research progresses in deformation-failure mechanisms of jointed rock mass induced by P-wave were summarized systematically in this paper. Then the correct thinking and effect way to solving the core problems is discussed, which is designed to play an important role in the research on the macro dynamic response and the micro mechanism of rock mass under P-wave. Also, the research on seismic response of jointed rock mass and the failure pattern of jointed rock slopes induced by near field P-wave would be deepened, indicating the direction for further study on the seismic geological hazards.