دورية أكاديمية
Damage initiation and propagation assessed from stress-induced microseismic events during a mine-by test in the Opalinus Clay
| العنوان: | Damage initiation and propagation assessed from stress-induced microseismic events during a mine-by test in the Opalinus Clay |
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| المؤلفون: | Le Gonidec, Yves, Sarout, J., Wassermann, Jérôme, Nussbaum, Christophe |
| المساهمون: | Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), CSIRO Earth Science and Resource Engineering Perth, Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO), Laboratoire Géosciences et Environnement Cergy (GEC), Fédération INSTITUT DES MATÉRIAUX DE CERGY-PONTOISE (I-MAT), Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine, Federal Office of Topography swisstopo, Federal Office of Topography Swisstopo |
| المصدر: | ISSN: 0956-540X. |
| بيانات النشر: | HAL CCSD Oxford University Press (OUP) |
| سنة النشر: | 2014 |
| المجموعة: | Archive Ouverte de l'Université Rennes (HAL) |
| مصطلحات موضوعية: | Wave propagation, Geomechanics, Acoustic properties, Microstructures, Defects, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
| الوصف: | International audience ; We report in this paper an original analysis of microseismic events (MSEs) induced by an excavation operation in the clay environment of the Mont Terri underground rock laboratory. In order to identify the MSEs with confidence, we develop a restrictive but efficient multistep method for filtering the recorded events. We deduce the spatial distribution and processes associated with the excavation-induced damage from the spatial location and focal mechanisms of the MSEs. We observe an asymmetric geometry of the excavation damaged zone around the excavated gallery, without notable microseismic activity in the sandy facies sidewall, in contrast with the shaly facies sidewall where a first burst of events is recorded, followed by two smaller bursts: one locates ahead of the excavation front and is associated with a dominant double-couple component, suggesting bedding plane reworking, that is, shear fracture mode, and the MSEs of the other cluster inside the shaly sidewall of the gallery, with a dominant compensated linear vector dipole component, suggesting extensive cracking. We identify and discuss four major factors that seem to control the MSEs source mechanisms: lithology, geometry of the geological features, gallery orientation and direction of the main compressive stress. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | insu-01131800; https://insu.hal.science/insu-01131800Test; https://insu.hal.science/insu-01131800/documentTest; https://insu.hal.science/insu-01131800/file/LeGonidec-2014.pdfTest |
| DOI: | 10.1093/gji/ggu122 |
| الإتاحة: | https://doi.org/10.1093/gji/ggu122Test https://insu.hal.science/insu-01131800Test https://insu.hal.science/insu-01131800/documentTest https://insu.hal.science/insu-01131800/file/LeGonidec-2014.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.FCCC06A2 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/gji/ggu122 |
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