关键词: 神东矿区, 较深埋深, 主运巷道, 矿压显现规律, 数值模拟

Abstract: Against the problem of insufficient research on mining pressure manifestation in relatively deep mining depth of the superlarge mine represented by Shendong Mining area, this paper takes 22208 fully mechanized mining face of Buertai Coal mine as the engineering background, and conducts field research and numerical simulation on the ground pressure under this condition. The following conclusions are obtained: 1) The roadway deformation monitoring shows that the total subsidence of the tailgate roadway is not significant, deformation of coal face side is 150 mm, the other side is 50mm, the maximum roof separation is 5 mm, the roadway deformation degree is controllable; 2) The stress monitoring shows that 45 m advancing from the working face begins to enter the area affected by the advanced stress, and the stress value begins to increase significantly. At about 10 m, the stress is obviously increased, and the coal wall may have a drum, a rib, and even the possibility of blasting. It is speculated that this section is in the peak area of advance abutment pressure. Therefore, the stress must be strictly implemented in advance anchor cable protection. 3)Numerical simulation analysis shows that under the support mode of anchor bolt and cable, the range of principal stress and shear stress are reduced compared with that without support, and the integrity of surrounding rock is improved. The number of plastic blocks in the roof decreased, mainly due to tensile failure. The plastic zone of the two sides of the roadway is smaller, and shear failure is the main failure. The research can provide reference for mining pressure control of fully mechanized mining face with high mining intensity under the condition of deeper buried depth in Shendong mining area.