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Rock Surface Strain In Situ Monitoring Affected by Temperature Changes at the Pozary Field Lab (Czechia)
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SYSNO ASEP 0571767 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Rock Surface Strain In Situ Monitoring Affected by Temperature Changes at the Pozary Field Lab (Czechia) Author(s) Racek, Ondřej (USMH-B) SAI, ORCID
Balek, Jan (USMH-B) ORCID
Loche, Marco (USMH-B) ORCID, RID
Vích, D. (CZ)
Blahůt, Jan (USMH-B) RID, ORCID, SAINumber of authors 5 Article number 2237 Source Title Sensors. - : MDPI
Roč. 23, č. 4 (2023)Number of pages 18 s. Publication form Online - E Language eng - English Country CH - Switzerland Keywords monitoring system ; strain gauges ; rock mass ; thermal behavior ; slope stability OECD category Geology R&D Projects SS02030023 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) TP01010055 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Open access Institutional support USMH-B - RVO:67985891 UT WOS 000942089300001 EID SCOPUS 85148968545 DOI 10.3390/s23042237 Annotation The evaluation of strain in rock masses is crucial information for slope stability studies. For this purpose, a monitoring system for analyzing surface strain using resistivity strain gauges has been tested. Strain is a function of stress, and it is known that stress affects the mechanical properties of geomaterials and can lead to the destabilization of rock slopes. However, stress is difficult to measure in situ. In industrial practice, resistivity strain gauges are used for strain measurement, allowing even small strain changes to be recorded. This setting of dataloggers is usually expensive and there is no accounting for the influence of exogenous factors. Here, the aim of applying resistivity strain gauges in different configurations to measure surface strain in natural conditions, and to determine how the results are affected by factors such as temperature and incoming solar radiation, has been pursued. Subsequently, these factors were mathematically estimated, and a data processing system was created to process the results of each configuration. Finally, the new strategy was evaluated to measure in situ strain by estimating the effect of temperature. The approach highlighted high theoretical accuracy, hence the ability to detect strain variations in field conditions. Therefore, by adjusting for the influence of temperature, it is potentially possible to measure the deformation trend more accurately, while maintaining a lower cost for the sensors. Workplace Institute of Rock Structure and Mechanics Contact Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216 Year of Publishing 2024 Electronic address https://doi.org/10.3390/s23042237
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