孤岛煤柱面回采巷道过断层围岩控制技术  

Study on Surrounding Rock Control Technology Passing through Faults for Mining Roadway in Island Coal Pillar

作　　者：郭韶鲁 Guo Shaolu(Shanxi Changzhi Jingfang Coal Industry Co.,Ltd.,Changzhi,Shanxi 047100)

机构地区：[1]山西省长治经坊煤业有限公司,山西长治047100

出　　处：《江西煤炭科技》2020年第2期72-74,78,共4页Jiangxi Coal Science & Technology

摘　　要：本文通过理论与数值模拟分析经坊矿3-701孤岛煤柱面3-边角071顺槽掘进过断层期间的围岩变形破坏及应力分布特征,针对原有支护方式存在的问题,提出采用超前锚杆支护+锚网棚联合支护方式进行支护优化调整。通过50d观测后,其顶底板移近量稳定在251 mm,两帮移近量稳定在157 mm,有效地解决了3-边角071顺槽原有支护方式存在的变形过大问题,可为类似条件下巷道过断层支护选择提供参考。In view of the problems existing in original supporting methods,the paper analyzes the deformation,failure and stress distribution characteristics of surrounding rock during the excavation of 3-701 Gudao coal cylinder with 3-corner 071 in Jingfang coal mine by theoretical and numerical simulation,and proposes a combined support method of advance bolt support and anchor mesh shed.After 50 days of observation,the approach of the roof and floor tends to be stable at 251 mm,and the approach of the two sides tends to be stable at 157 mm,which effectively solves the problem of too large deformation of the 3-edge angle 071 chute,and provides a reference for the selection of roadway fault support under similar conditions.

关 键 词：过断层 围岩控制 超前支护 工字钢棚 

分 类 号：TD353.6[矿业工程—矿井建设]