Do Fluids Modify the Stick-Slip Behavior of Sheared Granular Media?

Omid Dorostkar, Paul Johnson, Robert Guyer, Chris Marone, Jan Carmeliet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

The study of stick-slip in granular fault gouge is important since slips observed in laboratory or numerical studies are understood to mimic earthquakes, allowing to better understand the governing mechanisms of earthquake dynamics. Granular fault gouge is the central part of a fault, where intact rocks have been crushed to granular particles due to erosion and fragmentation. These faults may be dry or saturated with fluids. When the gouge is saturated with a fluid, fluid-particle interactions arise which may influence the size and occurrence rate of slip events. Therefore, we conduct 3D coupled CFD-DEM simulations modelling the frictional behavior of fluid-saturated granular fault gouge. We observe that fluids can extend the stick phase leading to an increase in slip event size. This observation is confirmed by statistical analysis on a large number of stick-slip events.

Original languageEnglish (US)
Title of host publicationPoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
EditorsPatrick Dangla, Jean-Michel Pereira, Siavash Ghabezloo, Matthieu Vandamme
PublisherAmerican Society of Civil Engineers (ASCE)
Pages158-163
Number of pages6
ISBN (Electronic)9780784480779
DOIs
StatePublished - Jan 1 2017
Event6th Biot Conference on Poromechanics, Poromechanics 2017 - Paris, France
Duration: Jul 9 2017Jul 13 2017

Publication series

NamePoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics

Other

Other6th Biot Conference on Poromechanics, Poromechanics 2017
Country/TerritoryFrance
CityParis
Period7/9/177/13/17

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics

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