关键词: 千米深井, 掘进扰动, 围岩稳定性, 数值模拟

Abstract: Taking the gas test roadway in the II84 mining area of Guobei Coal Mine in Huaibei mining area as the engineering background，the deformation evolution law of the surrounding rock during the exca‐ vation disturbance of the main roadway in the strong structural area of the kilometer deep mine is deeply ex‐ plored. The comprehensive control technology method of the stability of the surrounding rock of the kilome‐ ter deep mine roadway is proposed，and the importance of timely support is verified. The results show that the average buried depth of the gas test roadway in II84 mining area is large (1 108 m)，the formation temper‐ ature is high ( 43.35°C~49.84°C )，and it crosses multiple faults，resulting in obvious ground pressure. With the increase of the distance from the excavation face，the growth rate of the roof subsidence of the roadway shows a decreasing trend，and when the distance from the excavation distance is about 2 times the width of the roadway，the growth rate of the roof subsidence gradually tends to be stable. With the increase of the bur‐ ied depth of the roadway，the growth rate of the roof subsidence with the advancing distance of the excava‐ tion face is also increasing，and the plastic zone of the surrounding rock is increased by about 1.5~2.1 times. Under the condition of active and timely support，certain continuous deformation and overall displacement of surrounding rock are allowed to occur，which is conducive to the stability control of surrounding rock in kilometer deep mine. The research results provide a reference for the stability control of surrounding rock in the process of excavation disturbance in kilometer deep mine roadway.

Key words: kilometer deep mine, excavation disturbance, stability of the surrounding rock, numerical simulation