Fibre optic sensing in geotechnics - analysis and evaluation of measured data
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00242566" target="_blank" >RIV/68407700:21110/16:00242566 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Fibre optic sensing in geotechnics - analysis and evaluation of measured data
Original language description
The paper presents the basic principles of the application of Brillouin Optical Time Domain Analysis (BOTDA) for distributed deformation measurement in geotechnics. It briefly describes the possible and tested utilization of this method (laboratory testing, on site applications) and in more details it deals with several issues and problems concerning data interpretation and evaluation. The first problem applies to unexpected increases of measured strain located at the points of attachment of measuring cable (local compression of measuring cables). The other problem deals also with unexpected increase of measured strain, particularly during borehole measurements. These measurements are provided with four measuring fibres at the same time, but the unexpected strain increases occur only at some of them. The measuring (analyzing) unit used for the basic BOTDA data evaluation enables more deep analysis of the measured data at each point of the measurement. This analysis was provided for selected measurement points of laboratory testing; the results are presented at the end of this paper.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
JM - Structural engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/FR-TI3%2F609" target="_blank" >FR-TI3/609: Research and development of detection and monitoring of critical areas of geotechnical constructions mainly in underground structures, mining industry and other engineering constructions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů