Seismic exploration in tunneling using full waveform inversion with a frequency domain model

  • With the knowledge of the geology in front of a tunnel, the excavation process can be optimized to avoid damage at the tunnel boring machine and settlements on the surface. Therefore, dwell times can be decreased and additional expenses can be avoided. Transmitted seismic waves will be spread, reflected and refracted due to geological changes. By utilizing geophones, the seismic waves will be captured and information about the geological structure in front of the tunnel can be extracted from the measured seismograms using e.g. the concept of full waveform inversion. A frequency domain model has been employed to demonstrate the potential of full waveform inversion for seismic reconnaissance in a tunnel environment. The success of the inversion procedure depends strongly on the positions of the utilized sender and receiver stations, the chosen initial material parameter distribution, and on the selected frequency groups for the inversion. Further challenges are an accurate representation of the reflecting surfaces and the application of absorbing borders to oppress reflections from the artificial boundaries, which delimit the analyzed domain. The results of the performed full waveform inversion for synthetic models of a 3D tunnel configuration with different disturbances ahead of the front tunnel face will be discussed. Additionally, the influence of different locations of the sender and receiver stations will be analyzed.

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Author:Christopher RiedelORCiDGND, Khayal MusayevGND, Matthias BaitschGND, Klaus HacklORCiDGND
Parent Title (English):Proceedings in applied mathematics & mechanics
Place of publication:Weinheim
Document Type:Article
Date of Publication (online):2024/03/08
Date of first Publication:2021/01/25
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Issue:1, Artikel e202000141
First Page:e202000141-1
Last Page:e202000141-2
Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich.
Institutes/Facilities:Lehrstuhl für Mechanik - Materialtheorie
Dewey Decimal Classification:Technik, Medizin, angewandte Wissenschaften / Ingenieurbau, Umwelttechnik
open_access (DINI-Set):open_access
faculties:Fakultät für Bau- und Umweltingenieurwissenschaften
Licence (English):License LogoCreative Commons - CC BY 4.0 - Attribution 4.0 International