摘要
以9100工作面回风顺槽为研究对象,采用UDEC模拟分别留设3 m、5 m、8 m、18 m煤柱时,煤柱和巷道围岩变形破坏情况。根据模拟结果可知,当留设5 m煤柱时安全性和经济效益最优。采用锚网索和注浆加固的形式支护巷道,通过监测巷道围岩变形量可知,5 m煤柱、锚网索支护、注浆加固相结合的方式有效提高了沿空掘巷巷道的稳定性。
Taking 9100 working face’s return air passage as the research object,UDEC is used to simulate the deformation and failure of coal pillars and roadway surrounding rock when 3 m,5 m,8 m,and 18 m coal pillars are set aside.The safety and economic benefits are optimal when a 5 m coal pillar is set aside according to the simulation results.Supported in the form of anchor-net-cable and grouting reinforcement,the combination of 5 m coal pillar,anchor-net-cable support and grouting reinforcement can effectively improve the stability of the roadway of gob-side entry driving.
作者
路遥
Lu Yao(Gaizhou Coal Industry Co.,Ltd.,Shanxi Coal Transportation and Marketing Group,Gaoping,Shanxi 048400)
出处
《江西煤炭科技》
2020年第4期36-38,共3页
Jiangxi Coal Science & Technology
关键词
沿空掘巷
煤柱
变形量
支护技术
gob-side entry driving
coal pillar
deformation
supporting technology