Unique spatial methane distribution caused by spontaneous coal combustion in coal mine goafs: An experimental study

被引:66
|
作者
Li, Lin [1 ,3 ]
Qin, Botao [1 ,2 ,3 ]
Ma, Dong [1 ,3 ]
Zhuo, Hui [1 ,3 ]
Liang, Hongjun [1 ,3 ]
Gao, Ang [1 ,3 ]
机构
[1] China Univ Min & Technol, Minist Educ, Key Lab Gas & Fire Control Coal Mines, Xuzhou 221116, Jiangsu, Peoples R China
[2] State Key Lab Coal Resources & Safe Min CUMT, Xuzhou 221116, Jiangsu, Peoples R China
[3] China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Spontaneous coal combustion; Methane explosion; Fire pressure; Air leakage; Entrainment effect; GAS; IGNITION; FACE;
D O I
10.1016/j.psep.2018.01.014
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A new type of incident in the form of a methane explosion caused by spontaneous combustion of coal is receiving more and more attention due to the high ground temperature and high methane content in coal mines. To investigate the formation process of this type of incidents and advance the research on methane explosion risk caused by spontaneous coal combustion, a self-designed experimental platform was used to determine the influence of spontaneous coal combustion on methane migration in the goaf. Additionally, the effect of different ventilation velocities at the mining face on methane migration in the goaf was studied. The results reveal that air leakage plays a key role in methane migration in the goaf. The bigger the ventilation velocity, the larger the area affected by air leakage. In addition, the superposition of the air leakage and the horizontal and vertical movement of hot gases creates the entrainment effect in the spontaneous combustion area. Eventually, the methane concentration at the location of spontaneous combustion is the lowest and it gradually increases outside the spontaneous combustion area because of the superposition of air leakage, 'fire pressure' and the entrainment effect. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:199 / 207
页数:9
相关论文
共 50 条
  • [21] Experimental study on characteristic temperature of coal spontaneous combustion
    Yang, Yong
    Fei, Jinbiao
    Luo, Zhenmin
    Wen, Hu
    Wang, Hu
    JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2023, 148 (19) : 10011 - 10019
  • [22] Experimental study on the effect of mechanochemistry on coal spontaneous combustion
    Li, Jinhu
    Li, Zenghua
    Yang, Yongliang
    Wang, Chaojie
    Sun, Liutao
    POWDER TECHNOLOGY, 2018, 339 : 102 - 110
  • [23] Experimental study on characteristic temperature of coal spontaneous combustion
    Yong Yang
    Jinbiao Fei
    Zhenmin Luo
    Hu Wen
    Hu Wang
    Journal of Thermal Analysis and Calorimetry, 2023, 148 : 10011 - 10019
  • [25] A Numerical Study to Assist Assessment of the Stability of Shallow Coal Mine Goafs
    Fei Zhang
    Barry Lehane
    Geotechnical and Geological Engineering, 2019, 37 : 2837 - 2846
  • [26] Catalytic combustion of coal mine ventilation air methane
    Su, S
    Agnew, J
    FUEL, 2006, 85 (09) : 1201 - 1210
  • [27] Study on Spontaneous Combustion Characteristics and Early Warning of Coal in a Deep Mine
    Wang, Caiping
    Du, Yuxin
    Deng, Yin
    Zhang, Yu
    Deng, Jun
    Zhao, Xiaoyong
    Duan, Xiadan
    FIRE-SWITZERLAND, 2023, 6 (10):
  • [28] Simple Discussion Reasons and Prevention on Spontaneous Combustion of Coal in Surface Coal Mine
    Bai Runcai
    Jian, Yang
    Yu, Bai
    PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON MINE SAFETY (2012), 2012, : 18 - 21
  • [29] Research and development of foamed gel for controlling the spontaneous combustion of coal in coal mine
    Wang, Gang
    Yan, Guoqiang
    Zhang, Xinhua
    Du, Wenzhou
    Huang, Qiming
    Sun, Lulu
    Zhang, Xiaoqiang
    JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2016, 44 : 474 - 486
  • [30] The Change in the Distribution of the 'Three Zones' of Spontaneous Combustion of Coal in a Coal Mine Goaf with a Retained Roadway by Roof Cutting
    Li, Lin
    Zhang, Shufan
    Chen, Xiangjun
    Li, Zhiqiang
    Wang, Lin
    Yuan, Junwei
    SOLID FUEL CHEMISTRY, 2025, 59 (01) : 60 - 75