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[1]宋博,王大鹏,李雨成,等.基于不同漏风源浅埋煤层采空区自燃“三带”分布规律研究*[J].中国安全生产科学技术,2022,18(6):38-44.[doi:10.11731/j.issn.1673-193x.2022.06.006]
　SONG Bo,WANG Dapeng,LI Yucheng,et al.Study on distribution law of spontaneous combustion “three zones” in goaf of shallow-buried coal seam based on different air leakage sources[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(6):38-44.[doi:10.11731/j.issn.1673-193x.2022.06.006]
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基于不同漏风源浅埋煤层采空区自燃“三带”分布规律研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年6期
页码:
38-44
栏目:
学术论著
出版日期:
2022-06-30

文章信息/Info

Title:
Study on distribution law of spontaneous combustion “three zones” in goaf of shallow-buried coal seam based on different air leakage sources
文章编号:
1673-193X(2022)-06-0038-07
作者:
宋博; 王大鹏; 李雨成; 李治刚; 刘安秀; 刘红威
(1.太原理工大学 安全与应急管理工程学院，山西 太原 030024；
2.山西晋神沙坪煤业有限公司，山西 忻州 034000)
Author(s):
SONG Bo;  WANG Dapeng;  LI Yucheng;  LI Zhigang;  LIU Anxiu;  LIU Hongwei
(1.College of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China;
2.Shanxi Jinshen Shaping Coal Industry Co.,Ltd.,Xinzhou Shanxi 034000,China)
关键词:
浅埋自燃煤层; 采空区; 自燃“三带”分布; 数值模拟; 多漏风源
Keywords:
shallow-buried spontaneous combustion coal seam;  goaf;  distribution of spontaneous combustion “three zones”;  numerical simulation;  multiple air leakage sources
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2022.06.006
文献标志码:
A
摘要:
为解决浅埋自燃煤层采空区因地表及工作面漏风而自燃的难题，以沙坪煤矿1818工作面为例，利用SF6示踪法检测采空区地表漏风通道和风速，利用FLUENT数值模拟分析不同漏风源采空区自燃“三带”分布的特征，并通过现场束管测试结果对比分析浅埋煤层采空区地表漏风对自燃“三带”分布的影响，同时限定工作面最小推进速度，确保工作面的安全生产。研究结果表明：地表漏风风速为0.06～0.30 m/s，漏风通道多且复杂；相比于工作面单一漏风源，有地表漏风存在时，自燃危险性加大；限定工作面最小推进速度为1.24 m/d。因此，多漏风源煤层开采条件下自燃“三带”分布的确定对浅埋藏自燃煤层采空区遗煤自燃预测预报及预防工作具有重要的指导和借鉴意义。
Abstract:
In order to solve the problem of spontaneous combustion in the goaf of shallow-buried spontaneous combustion coal seam due to the air leakage on the ground surface and working face,taking the 1818 working face of Shaping Coal Mine as an example,the SF6 tracer method was used to detect the surface air leakage channel and wind speed in the goaf.The FLUENT numerical simulation analysis was used to analyze the characteristics of the spontaneous combustion “three zones” distribution in the goaf under different air leakage sources,and the influence of surface air leakage in the goaf of shallow-buried coal seam on the distribution of spontaneous combustion “three zones” was compared and analyzed through the on-site beam tube test results.At the same time,the minimum advancing speed of the working face was limited to ensure the work safety of the working face.The results showed that the wind speed of surface air leakage was 0.06~0.30 m/s,and there were many and complicated air leakage channels.Compared with the single air leakage source on the working face,the risk of spontaneous combustion increased when there was the surface air leakage.The minimum advancing speed of the working face was limited to 1.24 m/d.Therefore,the determination on the distribution of the spontaneous combustion “three zones” in coal seams with multiple air leakage sources has important guidance and reference significance for the prediction,forecast and prevention on the spontaneous combustion of residual coal in the goaf of shallow-buried spontaneous combustion coal seams.

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备注/Memo

备注/Memo:
收稿日期： 2021-08-30；网络首发日期： 2022-04-28
* 基金项目： 国家自然科学基金项目（51774172）；山西省重点研发计划项目（201803D31053）
作者简介： 宋博，硕士研究生，主要研究方向为灾害防治理论与技术。
通信作者： 李治刚，博士，讲师，主要研究方向为煤层气开采及二氧化碳地质封存等。
更新日期/Last Update: 2022-07-10