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Remote Sens. 2018, 10(8), 1291; https://doi.org/10.3390/rs10081291

Distributed Fiber Optic Sensors for the Monitoring of a Tunnel Crossing a Landslide

1
Department of Engineering, University of Campania Luigi Vanvitelli, 81031 Aversa, Italy
2
Institute for Electromagnetic Sensing of the Environment (IREA) Consiglio Nazionale delle Ricerche (CNR), 80124 Napoli, Italy
3
Department of Geoengineering & Geoinformatics, Nanjing University, Nanjing 210000, China
4
School of Engineering, University of Basilicata, 85100 Potenza, Italy
5
Rete Ferroviaria Italiana (Ferrovie dello Stato Italiane Group), 70122 Bari, Italy
*
Author to whom correspondence should be addressed.
Received: 3 July 2018 / Revised: 26 July 2018 / Accepted: 12 August 2018 / Published: 15 August 2018
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Abstract

This work reports on the application of a distributed fiber-optic strain sensor for long-term monitoring of a railway tunnel affected by an active earthflow. The sensor has been applied to detect the strain distribution along an optical fiber attached along the two walls of the tunnel. The experimental results, relative to a two-year monitoring campaign, demonstrate that the sensor is able to detect localized strains, identify their location along the tunnel walls, and follow their temporal evolution. View Full-Text
Keywords: fiber optic sensors; stimulated Brillouin scattering; tunnels; field monitoring fiber optic sensors; stimulated Brillouin scattering; tunnels; field monitoring
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Minardo, A.; Catalano, E.; Coscetta, A.; Zeni, G.; Zhang, L.; Di Maio, C.; Vassallo, R.; Coviello, R.; Macchia, G.; Picarelli, L.; Zeni, L. Distributed Fiber Optic Sensors for the Monitoring of a Tunnel Crossing a Landslide. Remote Sens. 2018, 10, 1291.

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