A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deformation measurement technology of geomembrane at controlled landfills using optical fiber sensors
Distortions occur in the sheets that are laid to low ground or used as capping to prevent seepage at controlled landfills. These distortions vary depending on the contents, displacement when filling capping materials, and subsequent compaction. As one of the methods to recognize and evaluate deformation during construction or while in service, measurements of the sheet elongation strain have been attempted. However, only the point where the gauge was attached could be measured using a conventional strain gauge. Therefore, it was difficult to determine linear or surface distortions necessary in evaluating geomembrane deformation. In this research, the ability of optical fibres to register distortions in meter increments was utilised, a method to determine and evaluate geomembrane linear and surface deformation was studied, capping was attempted, and its applicability was confirmed. BOTDR (Brillouin optical time domain reflectmeter) method capable of measuring distortions in meter increments using optic fibre sensors was used.
Deformation measurement technology of geomembrane at controlled landfills using optical fiber sensors
Distortions occur in the sheets that are laid to low ground or used as capping to prevent seepage at controlled landfills. These distortions vary depending on the contents, displacement when filling capping materials, and subsequent compaction. As one of the methods to recognize and evaluate deformation during construction or while in service, measurements of the sheet elongation strain have been attempted. However, only the point where the gauge was attached could be measured using a conventional strain gauge. Therefore, it was difficult to determine linear or surface distortions necessary in evaluating geomembrane deformation. In this research, the ability of optical fibres to register distortions in meter increments was utilised, a method to determine and evaluate geomembrane linear and surface deformation was studied, capping was attempted, and its applicability was confirmed. BOTDR (Brillouin optical time domain reflectmeter) method capable of measuring distortions in meter increments using optic fibre sensors was used.
Deformation measurement technology of geomembrane at controlled landfills using optical fiber sensors
Nakamura, J. (author) / Sakanishi, M. (author) / Kitazawa, A. (author) / Kumagai, K. (author) / Fujihashi, K. (author) / Ogasawara, T. (author)
2006
4 Seiten, 14 Bilder, 3 Quellen
Conference paper
Storage medium
English
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