特厚煤层大断面软岩巷道底鼓治理措施与效果  

Floor Heave Control Measures and Effects at Large-section Soft-rock Roadway with Extra-thick Coal Seam

作　　者：冯万里 Feng Wanli(Dongqu Colliery,Xishan Coal&Electricity Group Co.,Ltd.,Gujiao,Shanxi 030200)

机构地区：[1]西山煤电集团东曲煤矿,山西古交030200

出　　处：《江西煤炭科技》2024年第1期4-6,10,共4页Jiangxi Coal Science & Technology

摘　　要：以斜沟矿特厚煤层大断面软岩巷道反复强底鼓工程实际为背景,综合运用理论计算与现场监测方法,结合巷道底板岩层特性,判断巷道底鼓类型,引用巷道极限平衡理论,计算得出巷道极限平衡区最大深度为11.05 m,设计“双应力壳-梁”控制巷道底鼓措施。现场应用的监测结果表明,采用新的控制措施后,巷道底鼓量最大为17.49 cm,巷道底板围岩控制措施取得较好效果。Aiming at the repeated strong floor heave at large-section soft-rock roadway with extra-thick coal seam in Xiegou Colliery,the author determines the type of roadway floor heave by theoretical calculation and on-site monitoring based on the characteristics of roadway floor rock,concludes the maximum depth of roadway limit equilibrium area is 11.05 m by quoting the roadway limit equilibrium theory,and proposes the “double-stress-shell-and-beam”control measure,whose on-site monitoring results show that it has achieved good results with the maximum floor heave of 17.49 cm.

关 键 词：特厚煤层 大断面软岩巷道 巷道底鼓治理 

分 类 号：TD322[矿业工程—矿井建设]