Locating an Abandoned Mine Tunnel by MASW – A Feasibility Study with a Noisy Dataset

Paper


Suto, K. and Sugawara, J.. 2024. "Locating an Abandoned Mine Tunnel by MASW – A Feasibility Study with a Noisy Dataset." 6th Asia Pacific Meeting on Near Surface Geoscience and Engineering. Tsukuba, Japan 13 - 15 May 2024 Japan. https://doi.org/rg/10.3997/2214-4609.202472051
Paper/Presentation Title

Locating an Abandoned Mine Tunnel by MASW – A Feasibility Study with a Noisy Dataset

Presentation TypePaper
AuthorsSuto, K. and Sugawara, J.
Journal Citation2024, pp. 1-5
Number of Pages5
Year2024
Place of PublicationJapan
Digital Object Identifier (DOI)https://doi.org/rg/10.3997/2214-4609.202472051
Web Address (URL) of Paperhttps://www.earthdoc.org/content/papers/10.3997/2214-4609.202472051
Web Address (URL) of Conference Proceedingshttps://www.earthdoc.org/content/proceedings/6th-asia-pacific-meeting-on-near-surface-geoscience-and-engineering
Conference/Event6th Asia Pacific Meeting on Near Surface Geoscience and Engineering
Event Details
6th Asia Pacific Meeting on Near Surface Geoscience and Engineering
Delivery
In person
Event Date
13 to end of 15 May 2024
Event Location
Tsukuba, Japan
AbstractAn entrance to an old coal mine was found in a residential development site. Using this site, an experimental MASW survey was carried out. Because of the unfavourable environment, the data quality was poor and dispersion analyses for the fundamental mode Rayleigh waves were very difficult among the noise and higher mode features. To deal with this difficult situation, depth-velocity models with and without a mine tunnel void are made based on the first-pass velocity analysis. Then dispersion curves were calculated for these models. The modeled dispersion curves showed that a presence of tunnel causes a “down-to-the -left” trend in the frequency-velocity space. Using this information, the data were re-analysed for dispersion curves. The inversion reached S-wave velocity sections with low-velocity features where the tunnel is present.
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Byline AffiliationsUniversity of Bucharest, Romania
University of Wollongong
University of Southern Queensland
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