摘要
本文以巨厚煤层临空巷道帮部大变形为研究对象,通过分析研究巨厚煤层临空侧巷帮的变形规律及变形机理,研究设计适合该条件下的支护方案,提出增加注浆锚索、更换大锚索托盘等支护优化方案。现场试验结果显示,通过增大支护面积、注浆加固煤体等支护优化措施,巷道帮部变形量比原始支护方式减小了800 mm,帮部变形得到了有效控制,保证了巷道正常使用。
The large deformation of gob-side roadway in super thick coal seam was taken as the research object in this paper.By analyzing and studying the deformation law and deformation mechanism of gob-side roadway,the support scheme suitable for this condition was studied and designed,and the support optimization schemes such as adding grouting anchor cable and replacing the large anchor cable tray were put forward.The field test results showed that by increasing the support area and strengthening the coal body by grouting,the deformation of the roadway side was reduced by 800 mm compared with the original support method,and the deformation of the side was effectively controlled to ensure the normal use of the roadway.
作者
叶飞
严斌
张小宇
Ye Fei;Yan Bin;Zhang Xiaoyu(Shaanxi Binchang Xiaozhuang Mining Co.,Ltd,Xianyang 713500,China)
出处
《煤炭与化工》
CAS
2022年第3期45-47,共3页
Coal and Chemical Industry
关键词
注浆锚索
支护面积
变形量
grouting anchor cable
support area
deformation
