Research on Coal Burst Prevention and Control for a Working Face with Stop Line Adjustment under the Influence of a Thrust Fault

To address the coal burst prevention and control problem caused by stop line adjustment under the influence of the F05 thrust fault in a mining face of Liangbaosi Coal Mine, this study adopts a combined method of engineering geological condition analysis, identification of main controlling factors of burst risk, adaptability analysis of monitoring and control measures, and calculation of roadway impact resistance. The key burst-prone areas and prevention measures in the final mining stage after stop line adjustment are investigated. The results show that after stop line adjustment, the coal burst risk in the final mining stage is jointly controlled by the F05 thrust fault, thick and hard roof, and adjustment mining disturbance. The tailgate outside the stop line is identified as the key area for burst prevention and control. To address the superposition characteristics of dynamic and static loads in this area, an integrated monitoring system combining microseismic monitoring, online coal stress monitoring, and drilling cuttings method is established. Furthermore, a control measure combining large-diameter borehole pressure relief and targeted destressing is proposed. Based on the energy absorption capacity of the support system and the impact energy balance relationship of the surrounding rock, the existing support system can resist a seismic event of magnitude 1.88, corresponding to a tolerable vibration energy of 2.4×10⁵ J. The study indicates that under effective pressure relief and monitoring and early warning conditions, the existing anti-burst measures and support system can ensure safe mining in the final stage of the working face.