摘要
以糯东煤矿12003工作面为工程背景,通过极限平衡理论结合UDEC软件建立沿空掘巷数值模型,针对不同宽度下护巷煤柱稳定性进行计算和分析,确定煤柱留设宽度达到25~30 m时较为合理,将该成果应用到12003回风巷,掘进和回采期间支护效果良好。
Taking the 12003 working face of Nuodong Coal Mine as the engineering background,the numerical model of roadway excavation along goaf is established through limit equilibrium theory and UDEC software.The stability of roadway support pillar under different widths is calculated and analyzed.It is determined that the reserved width of coal pillar is more reasonable when it reaches 25-30 m.This result is applied to the 12003 return air roadway,and the support effect is good during excavation and mining.
作者
姚国辉
Yao Guohui(Henan Energy Guizhou Xing'an Coal Industry Co.,Ltd.Nuodong Coal Mine,Guizhou Qianxi'nan 561504)
出处
《山东煤炭科技》
2021年第9期34-37,共4页
Shandong Coal Science and Technology
关键词
理论
沿空
煤柱
宽度
theory
along the air
coal pillar
width
