IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i22p15944-d1280108.html
   My bibliography  Save this article

Study on the Evolutionary Characteristics of Acoustic–Magnetic–Electric Signals in the Entire Process of Coal and Gas Outburst

Author

Listed:
  • Jianchun Ou

    (State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou 221116, China)

  • Enyuan Wang

    (School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Zhonghui Li

    (School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Nan Li

    (State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou 221116, China)

  • He Liu

    (School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

  • Xinyu Wang

    (School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China)

Abstract

In recent years, with the continuous increase in the depth and intensity of coal mining, coal and gas outburst disasters pose a severe threat to the safe production of coal mines. Thus, this experiment studied the characteristics of electromagnetic radiation, acoustic emission, and electric potential signals during gas adsorption, stress loading, and the entire outburst process. The results indicate that during the adsorption process, different parts of the coal body exhibit variations in electric potential signals, electromagnetic radiation, and acoustic emissions. During the loading process, the consistency between the acoustic–electric signals and the load change rate is good, and at the moment of outburst, the acoustic–electric signals significantly increase with the ejection of coal and gas. Outbursts generally occur during the decline in electromagnetic radiation and acoustic emission signals, with the internal electric potential signal strength first decreasing then rapidly increasing and the surface electric potential directly rising. The closer to the outburst opening, the greater the change in signal amplitude. Based on the above experimental results, the outburst can be monitored through the acoustic–magnetic–electric precursory signal changes during the adsorption and loading processes, which is of great significance to the safety production and rapid excavation of coal mines.

Suggested Citation

  • Jianchun Ou & Enyuan Wang & Zhonghui Li & Nan Li & He Liu & Xinyu Wang, 2023. "Study on the Evolutionary Characteristics of Acoustic–Magnetic–Electric Signals in the Entire Process of Coal and Gas Outburst," Sustainability, MDPI, vol. 15(22), pages 1-16, November.
  • Handle: RePEc:gam:jsusta:v:15:y:2023:i:22:p:15944-:d:1280108
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/22/15944/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/15/22/15944/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:22:p:15944-:d:1280108. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.