Abandoned coal tunnel survey by multiscale window analysis of Rayleigh waves
Abandoned coal tunnels (ACTs) pose risks to coal mine safety by accumulating gas and water, causing surface subsidence, and endangering infrastructure. Accurate detection of ACTs is vital for advanced prediction and geotechnical hazard warnings. Seismic methods, particularly the surface-wave method, have demonstrated reliability in detecting shallow buried tunnels within complex geological environments, but improvements in accuracy and resolution are still needed. In this paper, we suggest utilizing the multiscale window analysis of surface waves (MWASW) method for ACT surveys. We conduct a synthetic test and a real-world case study to evaluate the feasibility and validity of this approach. The synthetic test on a 2D ACT model reveals that MWASW can reconstruct anomalous structures and identify the presence of an ACT, while also highlighting some limitations of the method. In a real-world scenario, we applied MWASW to a multi-survey line dataset from a coal mine in Shanxi Province, China. The resulting meter-scale resolution pseudo-3D S-wave velocity structure uncovers a primary ACT and two sub-ACTs buried at approximately 60 m, offering valuable insights into their morphology and orientation. To our knowledge, this is the first application of the MWASW method in such a case study, indicating its potential as an emerging alternative for characterizing complex near-surface media, such as abandoned coal tunnels or mined-out areas in coal fields.
Nature Science Basic Research Plan in Shanxi Province of China[2019JLM8] ; Research Funds for the Central Universities, CHD["300102260203","300102262910"]
|WOS Research Area|
Geology ; Mining & Mineral Processing
Geosciences, Multidisciplinary ; Mining & Mineral Processing
|WOS Accession No|
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Earth and Space Sciences|
1.School of Geological Engineering and Geomatics,Chang'an University,Xi'an,710054,China
2.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518055,China
Li，Yu,Guan，Jianbo,Yan，Yingwei,et al. Abandoned coal tunnel survey by multiscale window analysis of Rayleigh waves[J]. Journal of Applied Geophysics,2023,215.
Li，Yu,Guan，Jianbo,Yan，Yingwei,&Wang，Jingqi.(2023).Abandoned coal tunnel survey by multiscale window analysis of Rayleigh waves.Journal of Applied Geophysics,215.
Li，Yu,et al."Abandoned coal tunnel survey by multiscale window analysis of Rayleigh waves".Journal of Applied Geophysics 215(2023).
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