棋盘井煤矿907辅运联巷交错巷道联合支护技术研究
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摘要
针对棋盘井煤矿907辅运联巷的交错巷道布置工程情况,展开巷道联合支护技术分析研究。分析得出,交错巷道围岩应力重分布互扰影响复杂,交错巷道巷间距离较近,就会引起巷间围岩应力的显著叠加扰动影响,相应的巷间围岩体裂隙破坏向中部延深抵近,发生裂隙贯通,导致交错巷道围岩承载整体失稳致灾。针对这一类工程问题,提出907辅运联巷锚杆+锚索+钢架棚联合支护方案。现场变形监测效果表明,907辅运联巷围岩变形量普遍在15～64 mm,支护方案实现了对907辅运联巷近距离交错巷道围岩控制。
Based on the layout of staggered roadway in 907 auxiliary transportation roadway of Qipanjing Mine, the technical analysis of combined support for staggered roadways was carried out, it was concluded that the influence of stress redistribution disturbance on surrounding rock of staggered roadway was complex, the closer the distance between staggered roadways, the more serious the disturbance of stress in surrounding rock between roadways, even the crack failure of surrounding rock mass between roadways extended to the middle of roadways and led to crack penetration, which caused bearing instability of surrounding rock of staggered roadway. Therefore, aiming at this engineering problem, the technical scheme of "bolt + anchor + steel shed"combined support technology scheme was proposed for the staggered position of roadway, and through the field deformation monitoring results, the deformation of surrounding rock in 907 auxiliary transport roadway was generally 15 ～ 64 mm, the current support scheme realized the surrounding rock control of 907 auxiliary transport combined roadway near staggered roadway.
Based on the layout of staggered roadway in 907 auxiliary transportation roadway of Qipanjing Mine, the technical analysis of combined support for staggered roadways was carried out, it was concluded that the influence of stress redistribution disturbance on surrounding rock of staggered roadway was complex, the closer the distance between staggered roadways, the more serious the disturbance of stress in surrounding rock between roadways, even the crack failure of surrounding rock mass between roadways extended to the middle of roadways and led to crack penetration, which caused bearing instability of surrounding rock of staggered roadway. Therefore, aiming at this engineering problem, the technical scheme of "bolt + anchor + steel shed"combined support technology scheme was proposed for the staggered position of roadway, and through the field deformation monitoring results, the deformation of surrounding rock in 907 auxiliary transport roadway was generally 15 ～ 64 mm, the current support scheme realized the surrounding rock control of 907 auxiliary transport combined roadway near staggered roadway.
引文
[1]聂军委.深部软岩巷道群掘进扰动效应与控制技术研究[D].徐州:中国矿业大学,2016.
[2]卜庆为,辛亚军,王超,等.交错巷道巷间围岩承载结构稳定性分析[J].煤炭学报,2018,43(7):1 866-1 877.
[3]叶萌.交错巷道围岩稳定性控制支护技术研究[D].包头:内蒙古科技大学,2017.
[4]张向阳,常聚才,王磊.深井动压巷道群围岩应力分析及煤柱留设研究[J].采矿与安全工程学报,2010(1):72-76.
[5]孟杰.回采扰动下煤层大巷群围岩加固技术研究与应用[J].煤炭工程,2017(6):43-46.
[6]白鑫,赵柏,张勤峰,等.平沟煤矿020902车场复杂交岔巷道锚杆支护技术研究[J].煤炭与化工,2017,40(4):56-58.
[7]徐文彬,宋卫东,杜建华,等.金属矿山底部结构巷道群开挖扰动稳定性分析[J].地下空间与工程学报,2014,10(3):689-696.
[8]宋朝阳,纪洪广,刘阳军,等.弱胶结围岩条件下邻近巷道掘进扰动影响因素[J].采矿与安全工程学报,2016,33(5):806-812.
[2]卜庆为,辛亚军,王超,等.交错巷道巷间围岩承载结构稳定性分析[J].煤炭学报,2018,43(7):1 866-1 877.
[3]叶萌.交错巷道围岩稳定性控制支护技术研究[D].包头:内蒙古科技大学,2017.
[4]张向阳,常聚才,王磊.深井动压巷道群围岩应力分析及煤柱留设研究[J].采矿与安全工程学报,2010(1):72-76.
[5]孟杰.回采扰动下煤层大巷群围岩加固技术研究与应用[J].煤炭工程,2017(6):43-46.
[6]白鑫,赵柏,张勤峰,等.平沟煤矿020902车场复杂交岔巷道锚杆支护技术研究[J].煤炭与化工,2017,40(4):56-58.
[7]徐文彬,宋卫东,杜建华,等.金属矿山底部结构巷道群开挖扰动稳定性分析[J].地下空间与工程学报,2014,10(3):689-696.
[8]宋朝阳,纪洪广,刘阳军,等.弱胶结围岩条件下邻近巷道掘进扰动影响因素[J].采矿与安全工程学报,2016,33(5):806-812.