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Theses

Impact des structures géologiques sur les échanges entre fractures et matrice dans les milieux poreux fracturés.

Abstract : Fractured porous media are characterized by the presence of fractures at several scales with heterogeneous properties implying areas highly permeable by comparison with the rock. Hydraulically, these media are characterized by short reaction times, due to the fractures, and long reaction times, due to the rock. These media are important for several topics as contaminated sites, element storage and resources exploitation. The main challenge of fracture porous media modeling is the representation of the geometrical and physical heterogeneities. As an exact representation of the medium is not possible, it is necessary to determine the key properties of the medium. This study aims at determining the impact of the geometrical and physical properties of the fractures and the matrix from the local to the global scales. A first part consists in creating methods to evaluate structure effects on the exchange between the fractures and the matrix and a second part consists in using these methods on several media. Finally, we describe a new discrete dual-porosity model taking into account the properties of the media characterizing its behavior.
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https://tel.archives-ouvertes.fr/tel-00567067
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Submitted on : Friday, February 18, 2011 - 9:29:44 AM
Last modification on : Friday, February 25, 2022 - 9:51:19 AM
Long-term archiving on: : Thursday, May 19, 2011 - 2:44:25 AM

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  • HAL Id : tel-00567067, version 1

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Delphine Roubinet. Impact des structures géologiques sur les échanges entre fractures et matrice dans les milieux poreux fracturés.. Hydrologie. Université Rennes 1, 2010. Français. ⟨tel-00567067⟩

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