Monitoring of deformation behaviour of unsaturated soil slope using distributed optical fibre sensor. The International Journal of Integrated Engineering, 12 (9). pp. 199-207. ISSN 2229-838X (2020)
Abstract
A distributed optical fibre sensing system named Brillouin Optical Time Domain Analysis (BOTDA) is used to monitor the strain development of a laboratory soil slope model. The technology is yet to be fully implemented due to uncertainties of attachment method or the best way to set up optical fibre sensors for geo-structure health monitoring. The aim of study is to evaluate the deformation behaviour subjected to the development of horizontal strains from Brillouin-based optical fibre sensor of a residual soil slope under loading impact using BOTDA technology. In this study, a soil-embedded strain sensor placement approach was proposed to be installed in the 1g model of soil slope which was achieved via the horizontal planting of a three-layered optical fibre cable in S-curve forming slope. In this paper, however, only pilot tests result is demonstrated for preliminary data interpretation purposes. From the preliminary laboratory tests, the results show the soil-embedded sensing fibre arrangement has efficiently detected and measured the horizontal strain deformation due to loading. Therefore, it can be concluded that the sensing fibre was well-responded with the soil movement under loading impact.
| Item Type: | Article |
|---|---|
| Keywords: | Monitoring, Deformation behaviour, Distributed optical fibre sensor, Unsaturated soil slope |
| Taxonomy: | By Subject > College of Engineering > Civil Engineering > Geotechnical and Transportation |
| Local Content Hub: | Subjects > College of Engineering |
| Depositing User: | Eza Eliana Abdul Wahid |
| Date Deposited: | 17 Nov 2022 06:03 |
| Last Modified: | 17 Nov 2022 06:03 |
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