Abandoned coal tunnel survey by multiscale window analysis of Rayleigh waves

Li，Yu1; Guan，Jianbo1; Yan，Yingwei2; Wang，Jingqi1

2023-08-01

10.1016/j.jappgeo.2023.105126

Journal of Applied Geophysics   Impact Factor & Quartile

0926-9851

1879-1859

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.

2D imaging Coal tunnel survry Dispersion analysis S-wave velocity structure Surface wave

SCI

English

Others

Nature Science Basic Research Plan in Shanxi Province of China[2019JLM8] ; Research Funds for the Central Universities, CHD["300102260203","300102262910"]

Geology ; Mining & Mineral Processing

Geosciences, Multidisciplinary ; Mining & Mineral Processing

WOS:001040111500001

ELSEVIER

GEOSCIENCES

2-s2.0-85164214837

Scopus

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).