陕西煤炭2025，Vol.44Issue(3)：86-89,4.DOI:10.20120/j.cnki.issn.1671-749x.2025.0315
经坊煤矿动压巷道围岩控制技术及应用分析
Dynamic pressure roadway surrounding rock control technology for Jingfang Coal Mine
刘闫阁1
作者信息
- 1. 山西省长治经坊煤业有限公司,山西 长治 047100
- 折叠
摘要
Abstract
The deformation control of surrounding rock roadway in the comprehensive caving section of extra-thick coal seam is a common problem restricting the safe production of coal mines.In order to improve the surrounding rock control technolo-gy of the dynamic pressure roadway,the deformation and support conditions of the return airway of the comprehensive caving working face of the extra-thick coal seam in Jingfang Coal Mine have been studied through theoretical analysis and industrial tests.By combining the limit balance theory and the roadway section size,the width of coal pillar in the return air roadway of 3-805 working face is calculated to be 6 m.The surrounding rock control system of"optimization of coal pillar-roof cutting top pressure relief-path correction-anchor support"is proposed to work with the whole large-section mining roadway of the extra-thick coal seam,and the deformation of surrounding rock,the force of support body,and the effect of on-site grouting are monitored.The deformation of surrounding rock,the force of support body and the effect of grouting on site were moni-tored.The on-site practice of the synergistic method shows that the surrounding rock deformation has been effectively con-trolled,and the convergence of the roadway has been reduced.关键词
岩层控制/煤柱/注浆改造/锚杆支护Key words
rock control/coal pillar/grouting modification/anchor support分类
矿业与冶金引用本文复制引用
刘闫阁..经坊煤矿动压巷道围岩控制技术及应用分析[J].陕西煤炭,2025,44(3):86-89,4.
