Shandong Energy Group Co., Ltd. Safety Engineering College, North China Institute of Science and Technology
Yuncheng Coal Mine, Shandong Energy Longkou Mining Group Co., Ltd.

为得到深井综放工作面侧向支承压力分布特征和评价邻近区域冲击危险性,采用钻孔、地震CT等方法对某矿1300采空区侧向支承压力分布进行了探测,结合应力对冲击地压的控制作用,对距该采空区80 m处的1301运输巷冲击危险性进行了评价,并通过工程案例对探测与评价结果进行了验证。结果表明,1300采空区侧向支承压力影响范围为155 m,低应力区宽度小于20 m,1301运输巷具有强冲击危险,采空区侧向支承压力演化的滞后性易造成邻近区域发生滞后性冲击地压。研究结果揭示了深井综放工作面邻近区域发生冲击地压的原因,为邻近区域冲击地压防治提供了基础。

In order to get the side abutment pressure distribution of deep fully-mechanized caving face and the rock burst risk in areas adjacent the face, the side a butment pressure distribution of the mined area of the No.1300 goaf in a coal mine was deteced with boreholes and the seismic CT.The rock burst risk of No.1301 head entry with distance of 80 m to the mined area was evaluated on the basis of the control action of stress to rock burst.Finally, the results of detection and evaluation wer e verified through the actual project case. The results show that the side abutment pressure distribution of the mined area of the No. 1301 headentry has an influence ra nge of 155 m and a low stress range less than 20 m.The No. 1301 headentry adjacent the No. 1300 goaf has a strong rock burst risk.The hysteretic evolution of the side abutment pressure is easy to result in the hysteretic rock burst in an adjacent region.The study reveals the cause for rock burst in a region adjacent the deep fully-mech anized caving face and provides a basis for prevention of rock burst in an adjacent region.