Quel est l'impact de simplifications géométriques et d'homogénéisations sur la modélisation du comportement hydromécanique d'un affleurement rocheux calcaire poreux et fracturé ?

Abstract : This paper presents a numerical analysis of in-situ well injection and pumping experiments carried out at the Coaraze Laboratory site with simultaneous fluid pressure and rock deformation measurements in boreholes. The Coaraze site is a small fractured and porous carbonate reservoir (decametric scale) that outcrops 30 km north of Nice. We have developed three-dimensional numerical approaches to simulate the hydro-mechanical behavior of major fractures and the surrounding equivalent continuous and porous medium that represents the intact rock and the other fractures. We have particularly focused on evaluation of the impact of geometrical simplifications and up-scaling on the quality of the prediction of the reservoir hydro- mechanical behavior during hydraulic experiments. Including in the model a few "key" fractures that have important roles in fluid flow and deformation are shown to be as efficient as performing an up-scaling of the fracture network.
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  • HAL Id : ineris-00973602, version 1
  • INERIS : EN-2010-415

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Alain Thoraval, Frédéric Cappa, Y. Guglielmi. Quel est l'impact de simplifications géométriques et d'homogénéisations sur la modélisation du comportement hydromécanique d'un affleurement rocheux calcaire poreux et fracturé ?. Stabilité des versants rocheux. Rock Slope Stability (RSS 2010), Nov 2010, Paris, France. pp.31. ⟨ineris-00973602⟩

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