Journal
SCIENTIFIC REPORTS
Volume 7, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-017-12610-1
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Funding
- Fondazione Cassa di Risparmio di Padova e Rovigo
- European Commission (Horizon) within the Water JPI
- European Commission (Horizon) within the WaterWork Cofunded Call (project DOMINO)
- Italian Ministry of Instruction, University and Research within the Water JPI
- Italian Ministry of Instruction, University and Research WaterWork Cofunded Call (project DOMINO)
- University of Padova
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A distributed optical fibre sensing system is used to measure landslide-induced strains on an optical fibre buried in a large scale physical model of a slope. The fibre sensing cable is deployed at the predefined failure surface and interrogated by means of optical frequency domain reflectometry. The strain evolution is measured with centimetre spatial resolution until the occurrence of the slope failure. Standard legacy sensors measuring soil moisture and pore water pressure are installed at different depths and positions along the slope for comparison and validation. The evolution of the strain field is related to landslide dynamics with unprecedented resolution and insight. In fact, the results of the experiment clearly identify several phases within the evolution of the landslide and show that optical fibres can detect precursory signs of failure well before the collapse, paving the way for the development of more effective early warning systems.
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