Monitoring mining induced seismicity using optical fibre sensors during mine exploitationShow others and affiliations
2023 (English)In: Proc SPIE Int Soc Opt Eng, SPIE , 2023, Vol. 643, article id 1264324Conference paper, Published paper (Refereed)
Abstract [en]
Fibre-optic based sensing technologies are becoming popular in the field of geophysics since enable long range and high spatial resolution acoustic measurements. In this work, we present preliminary results obtained using quasi-distributed Fibre-Bragg grating sensing and Distributed Acoustic Sensing (DAS) to monitor seismic activities in an operational underground mine. 12 FBGs and 800 metres of fiber optic cable was installed in the tunnel lining an operational mine and recorded mine seismicity such as production blasts and a small seismic activity of magnitude 1.41 in September 2022.
Place, publisher, year, edition, pages
SPIE , 2023. Vol. 643, article id 1264324
Keywords [en]
Distributed acoustic sensing, Fibre-optic sensing, geophone, mine, seismicity, Fiber optic sensors, Fiber optics, Mining, Acoustic measurements, Acoustic sensing, Fiber-optic sensing, Fiber-optics, High spatial resolution, Mining-induced seismicity, Seismic activity, Sensing technology, Fiber Bragg gratings
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:ri:diva-65710DOI: 10.1117/12.2678296Scopus ID: 2-s2.0-85163038565ISBN: 9781510665002 (electronic)OAI: oai:DiVA.org:ri-65710DiVA, id: diva2:1787120
Conference
2023 European Workshop on Optical Fibre Sensors, EWOFS 2023. Mons. 23 May through 26 May, 2023.
Note
The authors would like to acknowledge LKAB and BeFo (Stiftelsen Bergteknisk Forsking, project id: 444) for their support. The work of M.R.F-R. and HFM was supported by MCIN/AEI/10.13039/501100011033 and European Union «NextGenerationEU»/PRTR under grants RYC2021-032167-I and RYC2021-035009-I.
2023-08-112023-08-112023-10-31Bibliographically approved