Based on mesoscopic damage mechanics

numerical code F-RFPA2D is developed to simulate the failure process of roadway in high stress rock mass with intermittent joints. The influence of geostress and seepage on stability of deep roadway surrounding rock mass with intermittent joints is investigated. The simulation results give not only the visual image of seepage field

stress field

failure areas distribution of the roadway surrounding rock mass

but also displacement changes of key points of the roadway surrounding rock mass; moreover

stabilites of the roadway surrounding rock mass with groundwater and without groundwater is compared. The simulation results reveal that interaction among intermittent joints and geostress and seepage in rock mass plays an important role in evolution of roadway instability; for example

the direction of roadway collapse depends on the relative orientation of roadways and joints. Rock bridge plays an important role in the stability of the roadway. Although the seepage stress may accelerate instability of the roadway; the main failure modes of the roadway under high geostress is not changed by the seepage stress. The study has important theoretical and practical significance for further understanding the effect of the joints

stress and seepage on stability of deep roadway; and then to take effective reinforcement measures to deep roadway.