深部高应力巷道围岩控制与支护设计  

Surrounding Rock Control and Support Design of Deep High Stress Roadway

作　　者：岳喜占 杨子仪 李迎富[2] 孙茂如 YUE Xizhan;YANG Ziyi;LI Yingfu;SUN Maoru(China Coal Xinji Energy Co.,Ltd.,Huainan 232001,China;School of Mining Engineering,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]中煤新集能源股份有限公司,安徽淮南232001 [2]安徽理工大学矿业工程学院,安徽淮南232001

出　　处：《煤炭技术》2024年第6期37-42,共6页Coal Technology

基　　金：安徽省自然科学基金项目(20020183061)。

摘　　要：以新集一矿360606工作面为研究对象,通过现场调研、理论推导,分析出深部高应力围岩变形特征以及主动支护机理。应用数值模拟分析最佳支护参数,设计出巷道支护方案,再通过现场实践验证支护有效性。研究结果表明:(1)6煤巷道选用Q335左旋预应力锚杆,型号为φ22 mm×2 500 mm,其中巷道两帮的锚杆间排距为900 mm×1 000 mm;顶板锚杆间排距为900 mm×1 000 mm;(2)理论推导出浅部顶板临界离层值确定为60 mm,总的顶板临界离层值为90 mm,进一步取80%安全值为72 mm,现场测得数据远小于安全值。为深部高应力巷道的围岩控制与支护设计提供研究参考。Taking the 360606 face of Xinji No.1 mine as the research object,the deformation characteristics of deep high stress surrounding rock and active support mechanism are analyzed through field investigation and theoretical derivation.Using numerical simulation to analyze the best supporting parameters,the tunnel supporting scheme is designed,and then the supporting effectiveness is verified by field practice.The research results show that:(1)The coal tunnel 6 adopts Q335 left-handed prestressed bolt,the model isφ22 mm×2500 mm,and the row distance between the bolts on the two sides of the roadway is 900 mm×1000 mm;the row distance between roof bolts is 900 mm×1000 mm;(2)The theory deduces that the critical separation value of the shallow roof is determined to be 60 mm,and after the total critical separation value of the roof is 90 mm,the safety value of 80%is further taken to 72 mm.It provides reference for the surrounding rock control and support design of deep high stress roadway.

关 键 词：围岩控制 支护设计 数值模拟 主动支护机理 顶板临界离层值 

分 类 号：TD353[矿业工程—矿井建设]