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Coal and Coalbed Methane Co-Extraction Technology Based on the Ground Movement in the Yangquan Coalfield, China

Author

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  • Guozhong Hu

    (School of Mines, Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
    Post-Doctoral Research Station, Yangquan Coal Industry (Group) CO., LTD, Yangquan 045000, Shanxi, China)

  • Jialin Xu

    (School of Mines, Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China
    State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)

  • Fuxi Zhang

    (Post-Doctoral Research Station, Yangquan Coal Industry (Group) CO., LTD, Yangquan 045000, Shanxi, China)

  • Changchun Zhao

    (Post-Doctoral Research Station, Yangquan Coal Industry (Group) CO., LTD, Yangquan 045000, Shanxi, China)

  • Wei Qin

    (State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)

  • Yiran Zhu

    (School of Mines, Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)

Abstract

The Yangquan coalfield is one of the typical highly gassy mining areas in China. However, its coal seams are of lower permeability, which are not conductive to coalbed methane (CBM) drainage. In this study, based on the theory of the ground movement, we analyzed the principle of coal and CBM coextraction in the Yangquan coalfield, and established the technology system of coal and CBM coextraction which was further implemented in the coal and CBM coextraction in the Yangquan coalfield. The coal and CBM coextraction technologies based on the “pressure-relief and permeability-increase” effect caused by the mining overburden movement can optimally ensure the safe and efficient mining and improve the gas drainage rate. A series of developed coal and CBM coextraction technologies for the Yangquan coalfield were mainly characterized by the high-level gas drainage roadway. This reached a maximum gas drainage amount of 270,000 m 3 /day for single drainage roadway and a pressure-relief gas drainage rate of >90%. Those technologies significantly improved the gas drainage effect safely and efficiently achieving the coal and CBM coextraction.

Suggested Citation

  • Guozhong Hu & Jialin Xu & Fuxi Zhang & Changchun Zhao & Wei Qin & Yiran Zhu, 2015. "Coal and Coalbed Methane Co-Extraction Technology Based on the Ground Movement in the Yangquan Coalfield, China," Energies, MDPI, vol. 8(7), pages 1-17, July.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:7:p:6881-6897:d:52346
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    References listed on IDEAS

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    1. Huang, Yuping & Zheng, Qipeng P. & Fan, Neng & Aminian, Kashy, 2014. "Optimal scheduling for enhanced coal bed methane production through CO2 injection," Applied Energy, Elsevier, vol. 113(C), pages 1475-1483.
    2. Perera, M.S.A. & Ranjith, P.G. & Peter, M., 2011. "Effects of saturation medium and pressure on strength parameters of Latrobe Valley brown coal: Carbon dioxide, water and nitrogen saturations," Energy, Elsevier, vol. 36(12), pages 6941-6947.
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    4. Xiaowei Feng & Nong Zhang & Xiaoting Chen & Lianyuan Gong & Chuangxin Lv & Yu Guo, 2016. "Exploitation Contradictions Concerning Multi-Energy Resources among Coal, Gas, Oil, and Uranium: A Case Study in the Ordos Basin (Western North China Craton and Southern Side of Yinshan Mountains)," Energies, MDPI, vol. 9(2), pages 1-15, February.
    5. Yiyu Lu & Zhe Zhou & Zhaolong Ge & Xinwei Zhang & Qian Li, 2015. "Research on and Design of a Self-Propelled Nozzle for the Tree-Type Drilling Technique in Underground Coal Mines," Energies, MDPI, vol. 8(12), pages 1-12, December.

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