地应力与巷道轴向夹角对巷道围岩稳定性影响研究

Research on Influence of Angle between Stress and Axial of Surrounding Rock Displacement

以晋煤集团赵庄矿变形破坏严重的5302工作面回采巷道为工程背景,研究地应力与巷道布置轴向夹角的变化对巷道围岩移近量和巷道稳定性的影响,采用理论分析确定合适的角度,并利用FLAC3D数值模拟软件对不同角度关系情况下围岩情况进行模拟和对比,最后通过现场实测所得数据对分析结果作了现场实证,确定出巷道布置时与地应力角度的合理范围,从而优化巷道的支护效果,提高巷道的稳定性,为以后类似条件巷道的布置提供指导。

Based on the serious destroyed roadway of the 5302 coal face in Zhaozhuang mine of Jincheng anthracite mining group,the right angle was certained by the analysis of the changes of the axial angle of the gateway and the crustal stress which affected the quantity and stability of roadway surrounding rockmass. Surrounding rock under different angles relationship were compared and analyzed by the FLAC3 D numerical simulation software. At last,the result of the analysis was proved by the measured data in order to determine the appropriate scope of the axial angle of the roadway and the crustal stress. It is good for the improvement of the quantity and stability of the similar roadway surrounding rockmass.