Monitoring mining induced seismicity using optical fibre sensors during mine exploitation

Kenny Hey Tow; Joao Pereira; Magnus Lindblom; María R. Fernández-Ruiz; Hugo F. Martins; Matteo Rossi; Siw Nilsson; Harald van den Berg

doi:10.1117/12.2678296

23 May 2023 Monitoring mining induced seismicity using optical fibre sensors during mine exploitation

Kenny Hey Tow, Joao Pereira, Magnus Lindblom, María R. Fernández-Ruiz, Hugo F. Martins, Matteo Rossi, Siw Nilsson, Harald van den Berg

Author Affiliations +

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 1264324 (2023) https://doi.org/10.1117/12.2678296
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

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.

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Kenny Hey Tow, Joao Pereira, Magnus Lindblom, María R. Fernández-Ruiz, Hugo F. Martins, Matteo Rossi, Siw Nilsson, and Harald van den Berg "Monitoring mining induced seismicity using optical fibre sensors during mine exploitation", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 1264324 (23 May 2023); https://doi.org/10.1117/12.2678296

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