煤炭与化工2025，Vol.48Issue(4)：46-50,72,6.DOI:10.19286/j.cnki.cci.2025.04.0010
深部半煤岩窄煤柱沿空掘巷围岩控制技术研究
Study on surrounding rock control technology of gob-side entry driving in deep semi-coal rock narrow coal pillar
单振兴 1赵浩为 1王奕洋 2郭凯奇2
作者信息
- 1. 安徽恒源煤电股份有限公司祁东煤矿,安徽宿州 234000
- 2. 中国矿业大学(北京)能源与矿业学院,北京 100083
- 折叠
摘要
Abstract
The surrounding rock control technology of gob-side entry driving in deep semi-coal rock was studied,and the influence of narrow coal pillar width and control technology on the stability of surrounding rock was explored.Through numerical simulation and other methods,the reasonable width of narrow coal pillar was 6m.Because a part of the coal pillar in the deep semi-coal rock roadway was coal and a part was rock,the strength of the surrounding rock was different,and the asymmetric support technology was proposed.The coal body area was supported by high prestressed anchor cable,and the rock area was supported by anchor bolt.According to the field monitoring results,the 6 m wide narrow coal pillar and asymmetric support scheme could effectively control the deformation of roadway surrounding rock.The deformation of roadway surrounding rock tended to be stable after 35 days.When it was stable,the maximum surface deformation of surrounding rock on both sides was about 123 mm,which was within a reasonable range.The deformation of roadway surrounding rock had been significantly improved,indicating that the width of coal pillar and asymmetric control technology were reasonable and effective.关键词
半煤岩/沿空掘巷/数值模拟/煤柱宽度/非对称性/围岩控制Key words
semi-coal rock/gob-side entry driving/numerical simulation/coal pillar width/asymmetry/surrounding rock control分类
矿业与冶金引用本文复制引用
单振兴,赵浩为,王奕洋,郭凯奇..深部半煤岩窄煤柱沿空掘巷围岩控制技术研究[J].煤炭与化工,2025,48(4):46-50,72,6.
