Abstract：It is found out that the limitations of static load theory in rock burst research are apparent by ways of analyzing the ratio of maximum tangential stress at the opening to the unconfined compressive strength，the spatial distribution of rockburst events，the stability of surrounding rocks of tunnels excavated with TBM and the super-deep holes. To the tunnels excavated with drill and blast tunneling，rockburst should be the results of cracks propagating extensively in the twinkling of an eye after the surrounding rocks under the state of anisotropic stress are disturbed repeatedly by stress waves resulting from blasting，instant unloading and rock bursting. This may be summarized as dynamics mechanisms of rockburst. The types of stress waves resulting from the unloading disturbance in other blasting rounds are the same as those stemming from blast-loading disturbance，that is，P wave，S wave and Rayleigh wave. The disturbance of P wave and Rayleigh wave on surrounding rocks is apparent. The properties，distribution and attenuation of P wave and Rayleigh wave can reasonably explain the effect of geostress on rockburst and the spatial distribution of rockburst events.
