Modeling dry granular and coupled fluid-grain deformation within fault zones Academic Article uri icon

abstract

  • Abstract Shear of faults is often concentrated within a layer of" fault-gouge"-granular fragments produced by wear of the wall rock during shear. The shear of dry granular media already produces complex enough behavior: strain weakening, stick-slip, and shear localization. On top of this complexity the pores between the grains are in many cases filled with fluid, with a fluid pressure that is both influenced by and influences the grain motion, so that the strength of the whole fault-zone is actually controlled by the pore-fluid pressure …

publication date

  • December 1, 2011