摘要
工作面临空巷道受采空区动压影响变形严重,巷道返修复工造成了大量的资源浪费,同时严重制约矿井安全生产。以黄陵一号煤矿1009工作面进风顺槽为研究背景,通过分析1009进风顺槽临空巷道变形收敛特征及影响因素,采用数值模拟方法,对1009进风顺槽提出“T140型钢带+锚索+金属网”补强支护方案。研究结果显示,1009进风顺槽受1008采空区影响,在巷道的帮部及顶板靠两帮侧产生应力集中,应力峰值达到8.39 MPa,采取补强支护措施后,1009进风顺槽巷道变形量较未采取时发生明显变化,最大巷道变形量仅为330 mm,顶板最大下沉速度仅为2 mm/d,有效保证1009进风顺槽巷道成型效果,确保矿井安全生产。
The deformation of the working face airway is seriously affected by the dynamic pressure of the mining area,and the reworking of the roadway causes a lot of waste of resources,and also seriously restricts the mine safety production.By analyzing the deformation convergence characteristics and influencing factors of the 1009 windway in the 1009 windway,the numerical simulation method was used to propose a reinforcement support scheme of"T140 steel belt+anchor cable+metal mesh"for the 1009 windway.The research results show that the 1009 wind tunnel is affected by the 1008 hollow area,and the stress concentration is generated in the gang part of the tunnel and the top plate against the two gang sides,and the peak stress reaches 8.39 MPa,after taking the reinforcement support measures,the deformation of the tunnel of the 1009 wind tunnel changes significantly compared with that when it is not taken,and the maximum tunnel deformation is only 330 mm,and the maximum sinking speed of the top plate is only 2 mm/d,which effectively ensures that the deformation of the tunnel of the 1009 wind tunnel is not only the maximum deformation but also the maximum deformation of the top plate.The maximum roadway deformation is only 330 mm,and the maximum speed of roof sinking is only 2 mm/d,which can effectively ensure the effect of forming the 1009 windway and ensure the safe production of mine.
作者
赵群
张鹏
Zhao Qun;Zhang Peng(No.1 Coal Mine,Shaanxi Shanxi Coal Huangling Mining Co.,Ltd.,Yan'an Shaanxi 727307)
出处
《现代工业经济和信息化》
2022年第10期329-331,共3页
Modern Industrial Economy and Informationization
关键词
临空巷道
变形收敛
补强支护
围岩控制
airside tunnel
deformation convergence
reinforcement support
surrounding rock control
