山东煤炭科技2024，Vol.42Issue(5)：20-24,30,6.DOI:10.3969/j.issn.1005-2801.2024.05.005
盛平煤矿动压节理化窄煤柱锚注支护技术实践
Practice of Dynamic Pressure Jointed Narrow Coal Pillar Anchor Grouting Support Technology in Shengping Coal Mine
杨帅楠 1翟小军 1赵鹏2
作者信息
- 1. 山西煤炭运销集团吉县盛平煤业有限公司,山西 临汾 042103
- 2. 鄂尔多斯市乌兰煤炭(集团)有限责任公司,内蒙古 鄂尔多斯 017200
- 折叠
摘要
Abstract
Aiming at the problem of severe shrinkage and deformation of the cross section of a section of isolated island working face in Shengping Coal Mine,the characteristics of the fractured structure of the overlying rock mass in the roadway excavation along goaf are analyzed,the control mechanism of anchor rod support suspension theory,composite beam theory and others on the surrounding rock of the experimental roadway excavation along goaf is revealed,the technical parameters of anchor rod support for the roadway excavation along goaf are obtained,the weak area for stable control of the surrounding rock of the narrow coal pillar roadway excavation along goaf in the isolated island working face is determined,and grouting reinforcement scheme for its weak area is proposed.By using theoretical analysis,mechanical analysis,numerical simulation,and on-site measurement methods,its design scheme is analyzed and verified through experimental effects.The on-site measurement shows that the displacement of the two sides and the roof increases from 12 mm and 20 mm to 127 mm and 158 mm respectively,and gradually stabilized.The maximum value of the top anchor rod force gauge is 28.4 MPa,and the maximum value of the side anchor rod force gauge is 13.5 MPa.The anchor grouting support effect is significant,which can effectively control the deformation of the surrounding rock of the narrow coal pillar roadway excavation along goaf in the isolated island working face of Shengping Coal Mine.关键词
窄煤柱/裂隙扩展/锚杆支护/注浆加固Key words
narrow coal pillar/crack propagation/anchor rod support/grouting reinforcement分类
矿业与冶金引用本文复制引用
杨帅楠,翟小军,赵鹏..盛平煤矿动压节理化窄煤柱锚注支护技术实践[J].山东煤炭科技,2024,42(5):20-24,30,6.
