陕西煤炭2025，Vol.44Issue(8)：22-26,71,6.DOI:10.20120/j.cnki.issn.1671-749x.2025.0804
煤矿采空区自燃"三带"规律研究
"Three zones"law of spontaneous combustion in coal mine goaf
崔文利 1李慧刚 1周竹峰1
作者信息
- 1. 陕西陕北矿业韩家湾煤炭有限公司,陕西榆林 719399
- 折叠
摘要
Abstract
Taking a fully mechanized mining face of a mine in Shaanxi Province as an example,in order to study the law of"three zones"of spontaneous ignition in goaf of coal mine,gas data were collected and oxygen distribution law was analyzed by laying beam tube combined with field observation.The"three zones"model of goaf was constructed based on FLUENT software,and the range of"three zones"of goaf was divided with O2 concentration as the dividing index,and the maximum distance of oxidation heating zone was determined.The simulation results are compared with the field gas data,combined with the shortest spontaneous ignition period of floating coal.The oxidation zone in the goaf of the mine is 61 meters to 190 meters away from the working face,the return air side is 46.5 meters to 154 meters away from the working face,and the maximum oxidation zone width is 125.6 meters.The maximum safe driving speed is 5.6 meters per day.关键词
采空区"三带"/数值模拟/氧气浓度范围/煤自燃Key words
spontaneous combustion"three zones"/numerical simulation/oxygen concentration range/spontaneous combus-tion of coal分类
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崔文利,李慧刚,周竹峰..煤矿采空区自燃"三带"规律研究[J].陕西煤炭,2025,44(8):22-26,71,6.
