关键词: 神东矿区, 综放工作面, 矿压显现, 微震

Abstract: Against the problem of insufficient research on mining pressure monitoring of top coal caving in super-large mines currently represented by Shendong mining area, this paper takes the top coal caving face of Buertai Coal Mine as the background, and conducts field measurement research 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 100-130 mm, deformation of coal face side is 150 mm, the other side is 100 m, the maximum roof separation is 5 mm, the roadway deformation degree is controllable; 2) The surrounding rock stress results show that the influence range of the advanced bearing pressure is greater than 75m high, and the advanced bolt and cable protection must be strictly implemented; 3) The force monitoring results of the hydraulic support on the working face show that the initial pressure The step distance is 71.3 m, the duration of incoming pressure is 16.9 m, the average step distance of periodic incoming pressure is 14.8 m, and the incoming pressure distance is about 9 m; 4) The microseismic monitoring results show that the microseismic events are mostly concentrated near the nose and tail of the aircraft, the microseismic and large energy events gather near the coal pillar in the lateral goaf. The research can provide reference for the prevention and control of mine pressure in high-yield and high-efficiency top coal caving mines.