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

作　　者：单振兴 赵浩为 王奕洋 郭凯奇 Shan Zhenxing;Zhao Haowei;Wang Yiyang;Guo Kaiqi(Qidong Mine of Anhui Hengyuan Coal and Electricity Co.,Ltd.,Suzhou 234000,China;School of Energy and Mining Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China)

机构地区：[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

出　　处：《煤炭与化工》2025年第4期46-50,72,共6页Coal and Chemical Industry

摘　　要：针对深部半煤岩沿空掘巷围岩控制技术进行研究,探究窄煤柱宽度和控制技术对围岩稳定性的影响。以祁东矿为试验矿井,通过数值模拟等方法,得到合理的窄煤柱宽度为6 m。由于深部半煤岩巷道中煤柱一部分是煤,一部分是岩石,围岩强度不同,对此针对性的提出了非对称性支护技术,煤体区域采用高预应力锚索进行支护,岩石区域采用锚杆进行支护。根据现场监测结果,6 m宽的窄煤柱及非对称性支护方案能有效控制巷道围岩变形,巷道围岩变形在35 d后趋于稳定,稳定时两帮围岩表面变形量最大约123 mm,处于合理范围内,巷道围岩的变形情况得到显著改善,采用的煤柱宽度和非对称性控制技术是合理有效的。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 

分 类 号：TD353[矿业工程—矿井建设]