沿空掘巷掘进时机确定方法研究

Study on determination method of driving timing in roadway driving along goaf

为了避免沿空掘巷掘进扰动应力和工作面回采应力的叠加造成巷道应力环境的恶化以及巷道支护的困难,采用FLAC 3D数值模拟软件,分析了沿空掘巷时空效应,数值模拟了工作面采空侧实体煤侧向应力分布、巷道沿轴向的应力峰值分布以及沿空掘巷掘进时机确定。研究结果为类似矿井沿空掘巷采掘接续时间的安排提供了指导。

In order to avoid the stress environment deterioration and the difficulty of roadway support caused by the superposition of disturbance stress and mining stress along the goaf,using FLAC 3D numerical simulation software,the time and space effect of driving along goaf is analyzed,the lateral stress distribution of the solid coal at the goaf side,the peak stress distribution along the axial direction of the roadway and the determination of the driving time along the goaf are simulate.The research results provide guidance for the arrangement of mining connection time of gob side entry in similar mines.