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Modélisation des comportements mécaniques et hydrauliques de massifs rocheux simulés par des assemblages de blocs rigides. Introduction d'un couplage hydro-mécanique

Abstract : This research aims at modelling the hydro-mechanical behaviour of fissured rock masses by improvement and extension of a discrete element model, called BRIG3D. This model simulates fissured rock mass as a set of rigid blocks interacting along their interfaces. Interface deformation is related to the relative displacement of the corresponding blocks. Being subject to external loads, the total set of blocks moves until equilibrium is reached. The computation of this equilibrium has been improved by redefining the model description of the rigid block movement, the interface position and the stress distribution along an interface. To describe flow problems through blocks interfaces, a boundary element model has been developed. Flow through each interface is assumed to be laminar, stationary and planar. This hydraulic model has then been coupled with the mechanical model BRIG3D and used to analyse hydro-mechanical rock mass behaviour under varying loads. In particular, a study of a dam foundation has been carried out.
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  • HAL Id : tel-00529406, version 1

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Henda Bargui. Modélisation des comportements mécaniques et hydrauliques de massifs rocheux simulés par des assemblages de blocs rigides. Introduction d'un couplage hydro-mécanique. Mécanique [physics.med-ph]. Ecole Nationale des Ponts et Chaussées, 1997. Français. ⟨tel-00529406⟩

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