杜儿坪煤矿72908工作面沿空掘巷支护技术应用  

Application of Support Technology for Gob-side Driving Roadway in 72908 Working Face of Du'erping Colliery

作　　者：李明峰 Li Mingfeng(Safety Management Dept.,Shanxi Coking Coal Huozhou Coal&Electricity Group Co.,Ltd.,Taiyuan,Shanxi 030053)

机构地区：[1]山西焦煤西山煤电(集团)有限责任公司安全管理部,山西太原030053

出　　处：《江西煤炭科技》2025年第1期93-96,共4页Jiangxi Coal Science & Technology

摘　　要：针对杜儿坪煤矿72908工作面回风巷进行窄煤柱沿空掘巷围岩稳定性问题,通过理论分析、数值模拟、工程经验等手段进行了研究,得到窄煤柱合理留设宽度为7 m;根据数值模拟结果得到锚杆间排距采用800 mm×800 mm,锚杆长度采用2.5 m;确定了巷道各项支护参数,并进行了井下试验,得到巷道掘进期间及工作面回采期间变形量可以满足巷道的安全稳定。In view of the stability of the surrounding rock of the narrow-coal-pillar gob-side driving roadway in the 72908 working face of Du'erping Colliery,the various roadway support parameters are determined with the reasonable reserved width of the narrow coal pillar being 7 m,the spacing between anchor rods being 800 mmx 800 mm and the anchor length being 2.5 m by means of theoretical analysis,numerical simulation and engineeringexperience,whose underground tests show that the deformation during roadway excavation and working face recovery can meet the safety and stability requirements.

关 键 词：窄煤柱 巷道支护 变形量 

分 类 号：TD353.6[矿业工程—矿井建设]