Investigation of Acoustic Waves Behavior of an Underground Tunnel in a Multilayer Soil

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aut.relation.endpage15
aut.relation.issue13399en_NZ
aut.relation.journalScientific Reportsen_NZ
aut.relation.pages15
aut.relation.startpage1
aut.relation.volume12en_NZ
aut.researcherKalatehjari, Roohollah
dc.contributor.authorRoohezamin, Aen_NZ
dc.contributor.authorKalatehjari, Ren_NZ
dc.contributor.authorHajihassani, Men_NZ
dc.contributor.authorKharghani, Men_NZ
dc.contributor.authorDias, Den_NZ
dc.date.accessioned2022-08-05T00:17:03Z
dc.date.available2022-08-05T00:17:03Z
dc.date.copyright2022-08-04en_NZ
dc.date.issued2022-08-04en_NZ
dc.description.abstractUnderstanding the acoustic behavior of buried tunnels is valuable for locating them and monitoring their structure health. This research focuses on the acoustic behavior of buried tunnels in multilayer soil structures. The reflected and transmitted acoustic wave pressure variations are investigated exclusively for a multilayer soil buried tunnel. The tunnel system's 3D finite element model is presented,which contains the tunnel lining, surrounding soil, and the air inside the tunnel and at the ground surface. A free air explosion is used as the acoustic wave source. The reflected and transmitted waves' pressure values are measured to evaluate the effects of mechanical characteristics of soil layers, tunnel buried depths, and lining concrete types on the acoustic wave behavior of the tunnel. In addition, a utility line is introduced to the system in different positions related to the main tunnel to investigate its effect on the main tunnel’s acoustic wave behavior. The results indicate that in a multilayer soil structure, the relative position of the soil layers and the tunnel(whether the main tunnel or the utility line) significantly impacts the acoustic pressure value, particularly the transmitted wave pressure. When changing the tunnel buried depth and the lining concrete type, multiple pressure peaks are observed in reflected acoustic wave pressure–time history exclusive to a tunnel surrounded by a multilayer soil structure. The findings can be used to precisely interpret the recorded signals for structural health monitoring and locating underground structures, especially in a media with multilayer soil structures.en_NZ
dc.identifier.citationScientific Reports 12, 13399 (2022). https://doi.org/10.1038/s41598-022-16991-w
dc.identifier.doi10.1038/s41598-022-16991-wen_NZ
dc.identifier.issn2045-2322en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/15341
dc.languageEnglishen_NZ
dc.publisherNature Publishing Groupen_NZ
dc.relation.urihttps://www.nature.com/articles/s41598-022-16991-w.pdfen_NZ
dc.rights© The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.accessrightsOpenAccessen_NZ
dc.subjectAcoustic wavesen_NZ
dc.subjectSoilen_NZ
dc.subjectTunnelen_NZ
dc.titleInvestigation of Acoustic Waves Behavior of an Underground Tunnel in a Multilayer Soilen_NZ
dc.typeJournal Article
pubs.elements-id461725
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Faculty of Design & Creative Technologies
pubs.organisational-data/AUT/Faculty of Design & Creative Technologies/School of Future Environments
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