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A platform for research: civil engineering, architecture and urbanism
Dike monitoring using fiber sensor-based geosynthetics
We report on the development of distributed fiber sensors and their integration into geosynthetics as they are commonly used in the construction of dikes and dams for flood protection. The sensing system uses Stimulated Brillouin Scattering (SBS) in silica optical fibers. Using the Brillouin frequency analysis, the system is capable of detecting changes in both strain and temperature along the optical fibers. The strain experienced by the optical fibers corresponds to the deformation of the geosynthetics in case of a critical soil displacement. To satisfy requirements of dike structures, the system will be optimized to detect soil displacement with a spatial resolution of 5 m or less over a length in the range of 10 km. These rather modest requirements leave space for optimization on resolution of the measurement values, measurement time and cost efficiency.
Dike monitoring using fiber sensor-based geosynthetics
We report on the development of distributed fiber sensors and their integration into geosynthetics as they are commonly used in the construction of dikes and dams for flood protection. The sensing system uses Stimulated Brillouin Scattering (SBS) in silica optical fibers. Using the Brillouin frequency analysis, the system is capable of detecting changes in both strain and temperature along the optical fibers. The strain experienced by the optical fibers corresponds to the deformation of the geosynthetics in case of a critical soil displacement. To satisfy requirements of dike structures, the system will be optimized to detect soil displacement with a spatial resolution of 5 m or less over a length in the range of 10 km. These rather modest requirements leave space for optimization on resolution of the measurement values, measurement time and cost efficiency.
Dike monitoring using fiber sensor-based geosynthetics
Nöther, Nils (author) / Wosniok, Aleksander (author) / Krebber, Katerina (author) / Thiele, Elke (author)
2007
13 Seiten, 11 Bilder, 10 Quellen
Conference paper
Storage medium
English
Barriereschicht , Bodenverfestigung , Brillouin-Streuung , Dammbau , Deich , faseroptischer Sensor , Fehleranalyse , Frequenzanalyse , Geopolymer , Kosteneffizienz , mechanische Spannungsverteilung , Schadensanalyse , Schädigungsmechanismus , Siliciumdioxid , Überflutung , Überwachungstechnik , Verschiebungsmessung , Wasserundurchlässigkeit
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