Failure patterns caused by localized rise in pore-fluid overpressure and effective strength of rocks

Simple item page
dc.creatorRozhko, Alexander
dc.creatorPodladchikov, Yuri
dc.creatorRenard, François
dc.date2008-01-03
dc.date.accessioned2026-07-07T08:52:23Z
dc.date.available2026-07-07T08:52:23Z
dc.descriptionIn order to better understand the interaction between pore-fluid overpressure and failure patterns in rocks we consider a porous elasto-plastic medium in which a laterally localized overpressure line source is imposed at depth below the free surface. We solve numerically the fluid filtration equation coupled to the gravitational force balance and poro-elasto-plastic rheology equations. Systematic numerical simulations, varying initial stress, intrinsic material properties and geometry, show the existence of five distinct failure patterns caused by either shear banding or tensile fracturing. The value of the critical pore-fluid overpressure at the onset of failure is derived from an analytical solution that is in excellent agreement with numerical simulations. Finally, we construct a phase-diagram that predicts the domains of the different failure patterns and at the onset of failure.
dc.identifierhttps://arxiv.org/abs/0801.0559
dc.identifierhttp://arxiv.org/abs/0801.0559
dc.identifierGeophysical Research Letters 34 (2007) L22304
dc.identifierdoi:10.1029/2007GL031696
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/145261
dc.subjectGeophysics
dc.titleFailure patterns caused by localized rise in pore-fluid overpressure and effective strength of rocks
dc.typetext

Files

Collections

arXiv