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Identification and control of spontaneous combustion of coal pillars: a case study in the Qianyingzi Mine, China

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  • Yi Lu
  • Botao Qin

Abstract

Spontaneous combustion of coal is a natural hazard during mining. In China, more than 60 % of cases of spontaneous combustion of coal in China result from coal pillars in goafs. In this paper, the plastic deformation of a coal pillar was simulated and, based on the simulated vertical and horizontal displacement, the distribution of surface porosity was deduced. Mathematical models of oxygen consumption together with air diffusion and leakage were incorporated as user-defined functions in a FLUENT simulation to obtain the air flow and oxygen consumption during a 6-month interruption of mining in the Qianyingzi Mine, China. The simulated oxygen concentration was used as an indicator to identify areas of potential spontaneous coal combustion. The application of a foam slurry to the identified potential coal combustion areas proved to be an effective measure to prevent spontaneous coal combustion as carbon monoxide concentration remained at 20 ppm in the air return flow and at 10 ppm in the gas drainage line. Copyright Springer Science+Business Media Dordrecht 2015

Suggested Citation

  • Yi Lu & Botao Qin, 2015. "Identification and control of spontaneous combustion of coal pillars: a case study in the Qianyingzi Mine, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 75(3), pages 2683-2697, February.
    • Handle: RePEc:spr:nathaz:v:75:y:2015:i:3:p:2683-2697
    DOI: 10.1007/s11069-014-1455-2
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    Citations

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    Cited by:

    1. Yang Yu & Shen-En Chen & Ka-Zhong Deng & Peng Wang & Hong-Dong Fan, 2018. "Subsidence Mechanism and Stability Assessment Methods for Partial Extraction Mines for Sustainable Development of Mining Cities—A Review," Sustainability, MDPI, vol. 10(1), pages 1-21, January.
    2. Liu, Yin & Wen, Hu & Guo, Jun & Jin, Yongfei & Fan, Shixing & Cai, Guobin & Liu, Renfei, 2023. "Correlation between oxygen concentration and reaction rate of low-temperature coal oxidation: A case study of long-flame coal," Energy, Elsevier, vol. 275(C).
    3. Leilin Zhang & Botao Qin & Biming Shi & Qing Wu & Juan Wang, 2016. "The fire extinguishing performances of foamed gel in coal mine," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(3), pages 1957-1969, April.
    4. Xi, Xian & Jiang, Shuguang & Shi, Quanlin, 2023. "Study on the flow and bonding-reinforcement characteristics of composite foam slurry material used to block mine leakage," Energy, Elsevier, vol. 263(PD).
    5. Dawid Szurgacz & Magdalena Tutak & Jarosław Brodny & Leszek Sobik & Olga Zhironkina, 2020. "The Method of Combating Coal Spontaneous Combustion Hazard in Goafs—A Case Study," Energies, MDPI, vol. 13(17), pages 1-22, September.
    6. Kun Xu & Shuang Li & Jiao Liu & Cheng Lu & Guangzhe Xue & Zhengquan Xu & Chao He, 2022. "Evaluation Cloud Model of Spontaneous Combustion Fire Risk in Coal Mines by Fusing Interval Gray Number and DEMATEL," Sustainability, MDPI, vol. 14(23), pages 1-13, November.
    7. Magdalena Tutak & Jarosław Brodny & Dawid Szurgacz & Leszek Sobik & Sergey Zhironkin, 2020. "The Impact of the Ventilation System on the Methane Release Hazard and Spontaneous Combustion of Coal in the Area of Exploitation—A Case Study," Energies, MDPI, vol. 13(18), pages 1-31, September.
    8. Liu, Wei & Zhang, Fengjie & Gao, Tiegang & Chu, Xiangyu & Qin, Yueping, 2023. "Efficient prevention of coal spontaneous combustion using cooling nitrogen injection in a longwall gob: An application case," Energy, Elsevier, vol. 281(C).

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