Characterization of the spatial distribution of sealing in fracture networks from core-log data, and impact on network connectivity from DFN modeling
| Autor: | Doolaeghe, Diane, Davy, Philippe, Darcel, Caroline, Le Goc, Romain, Selroos, Jan-Olof |
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| Přispěvatelé: | Géosciences Rennes (GR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Centre National de la Recherche Scientifique (CNRS), Itasca Consultants, Swedish Nuclear Fuel and Waste Management Company, 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), Dubigeon, Isabelle |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
[SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology [PHYS.PHYS.PHYS-FLU-DYN] Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology |
| Zdroj: | European Geosciences Union General Assembly 2019 European Geosciences Union General Assembly 2019, Apr 2019, Vienne, Austria. 21, pp.EGU2019-16360, 2019, Geophysical Research Abstracts European Geosciences Union General Assembly 2019, Apr 2019, Vienne, Austria., 21, pp.EGU2019-16360, 2019, Geophysical Research Abstracts |
| Popis: | International audience; In crystalline rocks, flow takes place within the network of open fractures. Predicting flow paths is a basic requirement for groundwater management or environmental risk assessment. A major issue is that a large amount of fractures (up to 80%) is completely sealed by mineral precipitations and rock weathering with potentially important consequences on large-scale connectivity and flow paths. This study aims at characterizing the distribution of sealing in the fracture network. It is part of a risk assessment project related to the deep storage of nuclear waste in Sweden. The first part of this study relies on the analysis of 23 drilled boreholes (from 200 to 1000 meters deep) from the site of Forsmark (Sweden). The proportion of sealed fractures in boreholes gives an estimate of the total sealed surface regardless of the fracture size. We analyze the repartition of the total sealed surface as a function of fracture density, fracture trace orientation, depth and lithology. At shallow depth ( |
| Databáze: | OpenAIRE |
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