Study on the Characteristics of High-Frequency Electromagnetic Wave Detection in Goaf Areas along Coal Seam Boreholes

Authors

  • Maolin Yang

    UCHN Energy Investment Group, SHEN DONG COAL Geological Survey Company, Ordos 017000, China

DOI:

https://doi.org/10.30564/jees.v7i7.9977
Received: 12 May 2025 | Revised: 26 May 2025 | Accepted: 29 May 2025 | Published Online: 8 July 2025

Abstract

China has a long history of coal mining, among which open-pit coal mines have a large number of small coal mine goafs underground. The distribution, shape, structure and other characteristics of goafs are isolated and discontinuous, and there is no definite geological law to follow, which seriously threatens the safety of coal mine production and personnel life. Conventional ground geophysical methods have low accuracy in detecting goaf areas affected by mechanical interference from open-pit mines, especially for waterless goaf areas, which cannot be detected by existing methods. This article proposes the use of high-frequency electromagnetic waves for goaf detection. The feasibility of using drilling radar to detect goaf was theoretically analyzed, and a goaf detection model was established. The response characteristics of different fillers in the goaf under different frequencies of high-frequency electromagnetic waves were simulated and analyzed. In a certain open-pit mine in Inner Mongolia, 100MHz high-frequency electromagnetic waves were used to detect the goaf through directional drilling on the ground. After detection, excavation verification was carried out, and the location of one goaf detected was verified. The results of engineering practice show that the application of high-frequency electromagnetic waves in goaf detection expands the detection radius of boreholes, has the advantages of high efficiency and accuracy, and has important theoretical and practical significance.

Keywords:

Underground Coal Mine; Goaf; High-Frequency Electromagnetic Wave (HFEW); Borehole

References

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How to Cite

Yang, M. (2025). Study on the Characteristics of High-Frequency Electromagnetic Wave Detection in Goaf Areas along Coal Seam Boreholes. Journal of Environmental & Earth Sciences, 7(7), 259–271. https://doi.org/10.30564/jees.v7i7.9977

Issue

Vol. 7 , Iss. 7 (July 2025): In Progress

Article Type

Article

License

Copyright © 2025 Maolin YANG

Creative Commons License

This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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