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Complexité et Dynamique de l'endommagement et de la rupture,
Mécanique, sismicité et invariance d'échelle des objets géologiques

Abstract : This manuscript reports working concerning the damage and the failure of rocks for scales ranging from the one of laboratory sample to the one of earth-crust including cliffs and underground mines. The analyse of laboratory and in situ data's, their statistical modelling and the numerical simulation are associated in order to provide a comprehensive framework for the complexity we observe during the deformation and failure of rocks. First we present the statistical and scaling invariance properties of damage structure and seismicity observed during the deformation. A numerical model based on a mesoscopic approach is proposed. This model is able to reproduce the major part of the observation and to provide a robust mechanical frame and to give information on the conditions needed for their emergence. This approach allows us to consider the deformation and failure process as a complex system for which the macroscopic properties are emerging from the interaction of small scale element with simple properties. The role of fluid is studied basing on the induced seismicity in a small scale fractured massif and on the numerical simulation of rock/fluid interaction. Last, we proposed a research project for the study of long term damage and hydro-mechanical coupling.
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https://tel.archives-ouvertes.fr/tel-00173641
Contributor : David Amitrano <>
Submitted on : Thursday, September 20, 2007 - 12:11:17 PM
Last modification on : Thursday, November 19, 2020 - 3:54:28 PM
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David Amitrano. Complexité et Dynamique de l'endommagement et de la rupture,
Mécanique, sismicité et invariance d'échelle des objets géologiques. Sciences de la Terre. Institut National Polytechnique de Lorraine - INPL, 2005. ⟨tel-00173641⟩

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