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Extraction of Pressurized Gas in Low Air-Conductivity Coal Seam Using Drainage Roadway

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  • Shu-gang Li

    (School of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China
    Key Laboratory of Western Mine Exploitation and Hazard Prevention with Ministry of Education, Xi’an 710054, Shaanxi, China)

  • Hai-qing Shuang

    (School of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China
    Key Laboratory of Western Mine Exploitation and Hazard Prevention with Ministry of Education, Xi’an 710054, Shaanxi, China)

  • Hong-sheng Wang

    (Key Laboratory of Western Mine Exploitation and Hazard Prevention with Ministry of Education, Xi’an 710054, Shaanxi, China
    School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China)

  • Ki-Il Song

    (Department of Civil Engineering, Inha University, Incheon 402-751, Korea)

  • Lang Liu

    (Key Laboratory of Western Mine Exploitation and Hazard Prevention with Ministry of Education, Xi’an 710054, Shaanxi, China
    School of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China)

Abstract

A drainage roadway was constructed in the fractured zone beside an air-return roadway of a mining site. However, drainage roadways serve only one working face and are discarded after mining, thus weakening sustainable mining practices. To improve the sustainability at mining sites, this paper proposes a new drainage roadway that can serve two adjacent working faces. A schematic layout of the proposed lateral high drainage roadway (LHDR) is presented. The LHDR can be used to extract pressurized gas from two neighboring mining zones. A theoretical study, numerical simulation, and field observations were performed to identify the mining-induced fractures and stress distribution. The layout of the LHDR and the optimal position of the extraction boreholes were derived considering the geological conditions in the Liyazhuang Coal Mine in China. A borehole and LHDR were installed at the specified mining site and the rock displacement of the LHDR and gas concentration at branch pipelines, boreholes of the LHDR, and upper part of the working face were monitored during mining. The performance of the LHDR was validated.

Suggested Citation

  • Shu-gang Li & Hai-qing Shuang & Hong-sheng Wang & Ki-Il Song & Lang Liu, 2017. "Extraction of Pressurized Gas in Low Air-Conductivity Coal Seam Using Drainage Roadway," Sustainability, MDPI, vol. 9(2), pages 1-11, February.
    • Handle: RePEc:gam:jsusta:v:9:y:2017:i:2:p:223-:d:89559
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    References listed on IDEAS

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    1. Kanbur, Ravi & Wang, Yue & Zhang, Xiaobo, 2021. "The great Chinese inequality turnaround," Journal of Comparative Economics, Elsevier, vol. 49(2), pages 467-482.
    2. Edward Glaeser & Wei Huang & Yueran Ma & Andrei Shleifer, 2017. "A Real Estate Boom with Chinese Characteristics," Journal of Economic Perspectives, American Economic Association, vol. 31(1), pages 93-116, Winter.
    3. Raymond Fisman & Jing Shi & Yongxiang Wang & Rong Xu, 2018. "Social Ties and Favoritism in Chinese Science," Journal of Political Economy, University of Chicago Press, vol. 126(3), pages 1134-1171.
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    Cited by:

    1. Zhiyi Zhang & Hideki Shimada & Takashi Sasaoka & Akihiro Hamanaka, 2017. "Stability Control of Retained Goaf-Side Gateroad under Different Roof Conditions in Deep Underground Y Type Longwall Mining," Sustainability, MDPI, vol. 9(10), pages 1-19, September.
    2. Fan Zhang & Guangsen Wang & Binbin Wang, 2023. "Study and Application of High-Level Directional Extraction Borehole Based on Mining Fracture Evolution Law of Overburden Strata," Sustainability, MDPI, vol. 15(3), pages 1-15, February.

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