|本期目录/Table of Contents|

[1]张大明,刘康,张勋.基于上行开采方式的煤层群采空区自然发火规律研究*[J].中国安全生产科学技术,2024,20(10):67-72.[doi:10.11731/j.issn.1673-193x.2024.10.009]
　ZHANG Daming,LIU Kang,ZHANG Xun.Research on spontaneous combustion law in goaf of coal seam group based on upward mining method[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(10):67-72.[doi:10.11731/j.issn.1673-193x.2024.10.009]
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基于上行开采方式的煤层群采空区自然发火规律研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年10期
页码:
67-72
栏目:
职业安全卫生管理与技术
出版日期:
2024-10-30

文章信息/Info

Title:
Research on spontaneous combustion law in goaf of coal seam group based on upward mining method
文章编号:
1673-193X(2024)-10-0067-06
作者:
张大明; 刘康; 张勋
（辽宁工程技术大学 矿业学院，辽宁 阜新 123000）
Author(s):
ZHANG Daming;  LIU Kang;  ZHANG Xun
(College of Mining, Liaoning Technical University, Fuxin Liaoning 123000, China)
关键词:
上行开采; 自然发火; Comsol数值模拟; 气体运移
Keywords:
upward mining;  spontaneous combustion;  Comsol numerical simulation;  gas migration
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2024.10.009
文献标志码:
A
摘要:
为了研究在上行开采方式下近距离煤层群采空区自然发火规律不清这一问题。采用数值模拟方法对开采煤层下方赋存1层采空区、2层采空区和3层采空区进行氧气运移情况和采空区遗煤自燃“三带”分布特征研究，从而研究出开采煤层采空区遗煤不会自然发火的工作面推进速度；结合国家能源集团宁夏煤业有限责任公司某煤矿煤层群上行开采3-2煤层实例，利用软件Comsol对其进行数值模拟，研究3-2煤层下部采空区漏风时，对采空区内遗煤自然发火的规律是否有影响。研究结果表明：当工作面推进速度大于3.17 m/d时，采空区遗煤不会自然发火。研究结果可为上行开采领域的采空区自然发火规律总结提供参考依据。
Abstract:
In order to study the problem that the spontaneous combustion laws in goaf of close distance coal seam group under the upward mining method is unclear,the numerical simulation method was used to study the oxygen migration and the distribution characteristics of “three zones” for the spontaneous combustion of residual coal in goaf of the first layer goaf,the second layer goaf,and the third layer goaf under the mining coal seam.The advancement speed of working face that the residual coal in the goaf of mining coal seam will not occur the spontaneous combustion was studied.Combined with the case of upward mining of 3-2 coal seam in coal seam group of a coal mine of the National Energy Group Ningxia Coal Industry,the numerical simulation was carried out by using Comsol software,and this paper studies whether the air leakage in the lower part of 3-2 coal seam has any influence on the spontaneous ignition of the left coal in the goaf.The results show that when the advancement speed of working face is more than 3.17 m/d,the residual coal in the goaf will not occur the spontaneous combustion.The research results can provide a reference basis for summarizing the spontaneous combustion laws of goaf in the upward mining field.

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备注/Memo

备注/Memo:
收稿日期： 2024-05-23
* 基金项目： 国家自然科学基金项目（52074147）
作者简介： 张大明，博士，副教授，主要研究方向为矿井灾害防治。
通信作者： 刘康，硕士研究生，主要研究方向为矿山安全与灾害防治。
更新日期/Last Update: 2024-10-31