关键词: 深部矿井, 冲击地压, 回采巷道, 围岩变形

Abstract: In order to grasp the deformation law of roadway surrounding rock under the impact of deep burial hard and extra-thick coal seam, and provide a basis for the prevention and control of deep rock burst in deep mines, the impacted ground was studied using theoretical analysis, FLAC3D numerical simulation and field test. The impact deformation failure mechanism and failure law of surrounding rock in the return airway of Hujiahe Coal Mine 402102 face affected by rock burst were studied. The research results show that the deformation of the surrounding rock will increase sharply after the mining disturbance reaches a certain level under deep conditions. The closer to the working face, the greater the trend of deformation change. The deformation of roof surrounding rock tends to be gentle due to the effect of advanced support, and the largest surrounding rock The displacement is up to 180mm. When it is within 45m ~ 55m from the front of the working face, the mining impact and the deformation of the surrounding rock is obvious. It is mainly manifested as the deformation of the surrounding rock on the roof and coal pillars, and the destruction depth of the plastic zone of the roof surrounding rock is more than 3m.