刘德宝, 韩颖.倾斜煤层采空区自燃“三带”划分及防灭火措施[J].河南理工大学学报（自然科学版）,2023,42(3):27-33.

LIU D B, HAN Y.“Three Zones” division of spontaneous combustion in goaf of inclined coal seam and countermeasures for fire fighting[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(3):27-33.

倾斜煤层采空区自燃“三带”划分及防灭火措施

刘德宝1, 韩颖1,2,3,4

1.河南理工大学  能源科学与工程学院，河南 焦作  454000;2.河南理工大学 中原经济区煤层（页岩）气河南省协同创新中心，河南 焦作  454000;3.河南理工大学 深井岩层控制与瓦斯抽采国家安监局科技支撑平台，河南 焦作  454000;4.河南理工大学 河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地，河南 焦作  454000

摘要:山西金晖瑞隆煤业有限公司主采的8+10号煤层具有自然发火危险性，为准确确定8115工作面自燃带位置，以便为采取防灭火措施提供靶位，以氧气体积分数作为划分指标，采用束管抽气法进行采空区自燃“三带”现场测定。构建采空区数值模型，采用FLUENT软件进行解算，得出采空区氧气体积分数分布规律。基于此，对自燃“三带”进行划分，确定自燃带宽度，并提出防灭火对策。结果表明：8115工作面采空区散热带为0~51.2 m；自燃带为51.2~86.2 m；窒息带为86.2 m以里。建议采用埋管注氮或架间插管汽雾阻化防灭火措施，对采空区自燃带进行全方位防灭火控制。

关键词:倾斜煤层;采空区;自燃“三带“;氧气体积分数;数值模拟

doi:10.16186/j.cnki.1673-9787.2021100041

基金项目:国家自然科学基金资助项目（51404093，51974108）

收稿日期:2021/10/18

修回日期:2022/03/22

出版日期:2023/05/25

“Three Zones” division of spontaneous combustion in goaf of inclined coal seam and countermeasures for fire fighting

LIU Debao1, HAN Ying1,2,3,4

1.School of Energy Science and Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China;2.Henan Province Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region，Henan Polytechnic University，Jiaozuo  454000，Henan，China;3.Technology Platform of Deep Mine Strata Control and Methane Drainage for State Administration of Work Safety，Henan Polytechnic University，Jiaozuo  454000，Henan，China;4.State Key Laboratory Cultivation Base for Gas Geology and Gas Control，Henan Polytechnic University，Jiaozuo  454000，Henan，China

Abstract:No.8+10 coal seams belonged to Ruilong Coal Industry are in danger of spontaneous ignition.In order to accurately determine the location of the spontaneous combustion zone of the 8115 working face to provide a target for the adoption of fire-fighting measures，taking the oxygen concentration as the dividing index，the beam tube extraction method was adopted to carry out the on-site measurement of the spontaneous combustion“Three Zones”in the goaf.The numerical model of mined-out area was constructed and solved by FLUENT software，and the distribution law of oxygen mass in mined-out area was obtained.Based on this，the“Three Zones”of spontaneous combustion were divided，and the width of the spontaneous combustion zone was determined.What’s more，the fire prevention measures were put forward.Studies showed that the heat dissipation zone of the goaf of the 8115 working face was 0~51.2 m.The spontaneous combustion zone was 51.2~86.2 m，and the width was 35 m.The suffocation zone was greater than 86.2 m.It was recommended to use buried pipe nitrogen injection or inter-frame pipe intubation to prevent fire extinguishing by vapor spraying，and to control the spontaneous combustion zone in the goaf.

Key words:inclined coal seam;goaf;“Three Zones”of spontaneous combustion;oxygen concentration;numerical simulation

倾斜煤层采空区自燃“三带”划分及防灭火措施_刘德宝.pdf