窄煤柱沿空掘巷围岩变形特征及控制技术研究  

Research on Deformation Characteristics and Control Technology of Surrounding Rock in Roadway Driving along Narrow Coal Pillar

作　　者：涂智凌 王逸良 TU Zhi-ling;WANG Yi-liang(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000

出　　处：《煤炭技术》2018年第9期35-37,共3页Coal Technology

摘　　要：针对沿空掘巷围岩两帮变形大的问题,结合某矿15014工作面回风顺槽工程地质条件,对不同窄煤柱下的巷道围岩变形量进行数值模拟,最终确定合理窄煤柱宽度为6 m。工程实践表明:当采用6 m窄煤柱沿空掘巷时,顶底板移近量最终稳定在190 mm、两帮变形量稳定在270 mm左右,既能够提高煤炭的回采率,又能够有效控制巷道围岩变形。According to the problem of engineering geological conditions of return wind crossheading in15014 working face,the deformation of roadway surrounding rock under different narrow pillars is numerically simulated, and determining coal pillar width is 6 m. The engineering practice shows that when a 6 m narrow pillar is used to drive along goaf,the distance between the top and bottom walls eventually stabilizes at 190 mm and the two buckling deformations stabilize at about 270 mm,which can not only increase coal yield,but also effectively control the roadway surrounding rock.

关 键 词：沿空掘巷 煤柱宽度 围岩控制 

分 类 号：TD353[矿业工程—矿井建设] TD822