Abstract: In order to study the influence principles of dynamic disturbance on roadway surrounding rock in different hardness coal seams, the paper numerically analyses the stress response of roadway surrounding rock under dynamic disturbance. The results demonstrate that the average period that the dynamic disturbance has effect on the steady of rock is 0.4 s. The soft coal’s is more serious than the hard coal’s when compared with the horizontal stress amplitude of roof rock and the deformation of roof and side roadway. However, the hard coal’s is more serious than soft coal’s when compared with the vertical stress amplitude of side roadway, the horizontal stress amplitude of floor rock, the deformation of floor rock and the plasticity zone of floor and side roadway. The deformation of roof rock is more serious than that of floor and side roadway in two kinds of coal seam, and in soft coal seam the deformation of side roadway is more serious than that of floor rock. During the increasing period of roadway deformation, the rate of rise is different in side roadway and floor roadway, but is same in roof rock.

Key words: dynamic disturbance, mechanic response, roadway surrounding rock