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Study on the Low-Temperature Oxidation Law in the Co-Mining Face of Coal and Oil Shale in a Goaf—A Case Study in the Liangjia Coal Mine, China

Author

Listed:
  • Gang Wang

    (Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao 266590, China
    College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China
    Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, China)

  • Yue Wang

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Lulu Sun

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Xiang Song

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Qiqi Liu

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Hao Xu

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Wenzhou Du

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

Abstract

The low-temperature oxidation law of coal and rock mass is the basis to study spontaneous combustion in goafs. In this paper, the low-temperature oxidation laws of coal, oil shale, and mixtures of coal and oil shale were studied by using laboratory programmed heating experiments combined with a field beam tube monitoring system. The results from the programmed heating experiments showed that the heat released from oil shale was less than that from coal. Coal had a lower carbon monoxide (CO)-producing temperature than oil shale, and the mixture showed obvious inhibiting effects on CO production with an average CO concentration of about 38% of that for coal. Index gases were selected in different stages to determine the critical turning point temperature for each stage. The field beam tube monitoring system showed that the temperature field of the 1105 co-mining face of coal and oil shale in the goaf of the Liangjia Coal Mine presented a ladder-like distribution, and CO concentration was the highest for coal and lower for the mixture of coal and oil shale, indicating that the mixture of coal with oil shale had an inhibiting effect on CO production, consistent with the results from the programmed heating experiments.

Suggested Citation

  • Gang Wang & Yue Wang & Lulu Sun & Xiang Song & Qiqi Liu & Hao Xu & Wenzhou Du, 2018. "Study on the Low-Temperature Oxidation Law in the Co-Mining Face of Coal and Oil Shale in a Goaf—A Case Study in the Liangjia Coal Mine, China," Energies, MDPI, vol. 11(1), pages 1-16, January.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:174-:d:126357
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    Citations

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    Cited by:

    1. Chaoyu Hao & Yanling Chen & Jiren Wang & Cunbao Deng & Guang Xu & Fengwei Dai & Rui Si & Hongfei Wang & Haoyu Wang, 2018. "Study on the Effect of Iron-Based Deoxidizing Inhibitors for Coal Spontaneous Combustion Prevention," Energies, MDPI, vol. 11(4), pages 1-10, March.
    2. Yang Zhang & Baiwei Lei & Bing Wu & Yu Meng & Binbin He, 2019. "An Experimental Study on the Heat and Mass Transfer of Liquid Nitrogen in a Loose Medium," Energies, MDPI, vol. 12(18), pages 1-17, September.
    3. Yuguo Wu & Yulong Zhang & Jie Wang & Xiaoyu Zhang & Junfeng Wang & Chunshan Zhou, 2020. "Study on the Effect of Extraneous Moisture on the Spontaneous Combustion of Coal and Its Mechanism of Action," Energies, MDPI, vol. 13(8), pages 1-17, April.
    4. Jiuyuan Fan & Gang Wang & Jiuling Zhang, 2019. "Study on Spontaneous Combustion Tendency of Coals with Different Metamorphic Grade at Low Moisture Content Based on TPO-DSC," Energies, MDPI, vol. 12(20), pages 1-18, October.
    5. 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).
    6. Youhong Sun & Li He & Shijie Kang & Wei Guo & Qiang Li & Sunhua Deng, 2018. "Pore Evolution of Oil Shale during Sub-Critical Water Extraction," Energies, MDPI, vol. 11(4), pages 1-15, April.

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