煤矿安全2019，Vol.50Issue(1)：161-164,4.DOI:10.13347/j.cnki.mkaq.2019.01.040
软岩轨道大巷围岩失稳机理及控制技术
Control Technology and Instability Mechanism of Main Rail－tunnel with Weak Surrounding Rock
谢小平 1徐光 2许瑞强2
作者信息
- 1. 贵州省六盘水师范学院 矿业与土木工程学院,贵州 六盘水 553004
- 2. 中国矿业大学 矿业工程学院,江苏 徐州 221116
- 折叠
摘要
Abstract
According to the difficulty problems of deformation and destruction of the main rail-tunnel with weak surrounding rock and complex geologic structure at Xinzhi Coal Mine, and the reasons for the deformation and destruction and the laws of mine pressure behavior for this main rail-tunnel are analyzed, and the combined support scheme "bolt-grouting and anchor network cable spray" is adopted after combined with the theoretical analysis and the test of practice. According to field industrial test, during the period of observation, cumulative convergence deformation of two sides is about 33 mm in rail tunnel, roof and floor cumulative deformation rate is approximately 28 mm, the phenomena of two sides convergence of roadway, roof subsidence and floor heave are gentle, that is, the effect of the optimized design scheme is obvious.关键词
轨道大巷/软弱围岩/巷道支护/注浆锚杆/巷道变形Key words
main rail-tunnel/weak surrounding rock/roadway support/grouting bolt/roadway deformation分类
矿业与冶金引用本文复制引用
谢小平,徐光,许瑞强..软岩轨道大巷围岩失稳机理及控制技术[J].煤矿安全,2019,50(1):161-164,4.
