Experimental research on a novel optic fiber sensor based on OTDR for landslide monitoring
| Autor: | Xiao Wang, Zheng-Wei Zhu, Dong-Ming Gu, Wan-Jie Li, Yong Zheng |
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| Rok vydání: | 2019 |
| Předmět: |
Optical fiber
Applied Mathematics 020208 electrical & electronic engineering 010401 analytical chemistry Landslide 02 engineering and technology Optical time-domain reflectometer Condensed Matter Physics 01 natural sciences Experimental research 0104 chemical sciences law.invention Field monitoring law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Instrumentation Geology Remote sensing |
| Zdroj: | Measurement. 148:106926 |
| ISSN: | 0263-2241 |
| DOI: | 10.1016/j.measurement.2019.106926 |
| Popis: | In this paper a novel optic fiber sensor (OFS) based on optical time domain reflectometer (OTDR) with simple construction and innovative structure was developed for landslide monitoring. The instrument had a maximum measurement distance and an effective initial measurement displacement and a low economic cost of 36 mm, 0.98 mm and $ 0.45/m. A direct-shear experiment with an OFS was conducted to investigate its effectiveness in monitoring the damage from shear sliding on rock slopes. A detailed field-monitoring test of the proposed OFS on a shallow artificial slope was conducted and the progressive deformation behavior of the slope was accurately captured by the OFS. In addition, it is possible to connect these OFSs in series to explore the underground properties of deep-seated landslides. This capability supports the promising application of the OFS in civil engineering for real-time monitoring of the stability of slopes, foundation pits and dams. |
| Databáze: | OpenAIRE |
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