山东煤炭科技2025，Vol.43Issue(1)：76-81,6.DOI:10.3969/j.issn.1005-2801.2025.01.016
华泓煤业双巷切顶成巷工作面采空区防灭火技术研究
Research on Fire Prevention and Extinguishing Technology in the Double Roadway Roof Cutting Roadway Formation Working Face Goaf of Huahong Coal Industry
胡国勇1
作者信息
- 1. 阳泉煤业集团翼城华泓煤业有限公司,山西 翼城 043500
- 折叠
摘要
Abstract
In view of the hidden danger problem of coal spontaneous combustion existing in the goaf of the 9306 working face of Huahong Coal Industry,research methods of on-site monitoring,numerical simulation,and comprehensive fire prevention and extinguishing technology are adopted.Through programmed heating experiments,CO and C2H4 are determined as coal spontaneous combustion prediction index gases,70-80℃ is the critical temperature for coal spontaneous combustion,and 110-130℃ is the temperature for coal body dry cracking;The distribution law of the"three zones"of coal spontaneous combustion in the goaf of the 9306 working face is monitored on site and numerically simulated using bundle tube monitoring system and COMSOL numerical simulation software.A comprehensive fire prevention and extinguishing technology system of"spraying plugging+nitrogen injection fire prevention and extinguishing+daily fire prevention and extinguishing"is developed accordingly.The spraying blocking air leakage technology effectively reduces the width and area of the oxidation zone in the goaf,and the nitrogen injection fire prevention and extinguishing technology significantly reduces the distribution range of the oxidation zone.The optimal nitrogen injection depth is 30 m and the nitrogen injection amount is 2200 m3/h.The on-site monitoring results show that this fire prevention and extinguishing technology system effectively suppresses the coal spontaneous combustion in the 9306 goaf,ensuring the safe production of the working face.关键词
双巷切顶成巷/采空区/漏风/自燃/防灭火Key words
roof cutting roadway formation of double roadway/goaf/air leakage/spontaneous combustion/fire prevention and extinguishing分类
矿山工程引用本文复制引用
胡国勇..华泓煤业双巷切顶成巷工作面采空区防灭火技术研究[J].山东煤炭科技,2025,43(1):76-81,6.
