In situ test of a borehole extensometer

Autor: N. Beghoul, Claude Froidevaux, J. Bloyet, Yanick Ricard
Přispěvatelé: Laboratoire de Sciences de la Terre (LST), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), ricard, yanick
Rok vydání: 1989
Předmět:
Zdroj: Rock Mechanics and Rock Engineering
Rock Mechanics and Rock Engineering, 1989, 22 (4), pp.289-297
ISSN: 1434-453X
0723-2632
DOI: 10.1007/bf01262284
Popis: cited By 2; Stresses in the Earth's crust are known to represent a key element of geodynamical processes at various spatial and temporal scales. Static stresses within lithospheric plates can be estimated on the basis of direct in situ measurements in boreholes or near the surface. Earthquake focal mechanisms yield the same type of information by sampling at greater depths. The quantification of geological deformations happens to be the principal tool to determine possible changes in time of the tectonic stress pattern. These changes can however be recorded only qualitatively and on the geological time scale. In seismic regions it is clear that the regional stress field varies on a time scale defined by the recurrence of earthquakes, say several tens of years. Our goal was to design a robust and cheap instrument which could continuously monitor stress changes at depths large enough to reduce meteorological influences. © 1989 Springer-Verlag.
Databáze: OpenAIRE
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