Abstract：Many dynamic disturbances often lead to local instability of roadway surrounding rock and mining workplace and result in rockburst in coal mining. The dynamic disturbance can be simplified as plane stress wave under certain conditions. The formation process of layer-crake of surrounding rock in roadway is simulated by numerical method for sloughing rockburst when stress wave acts. The relationships among the formation process of layer-crack of surrounding rock and the roadway depth，the elastic modulus of rock mass，the strength and time-history character of stress wave are studied. The mechanism of small footage and weak blast to lessen rockburst was discussed. The conditions under which rockburst happens due to dynamic disturbances are gained under certain geological conditions.
