EXPERIMENTAL DEFORMATION OF SHALE - MECHANICAL-PROPERTIES AND MICROSTRUCTURAL INDICATORS OF MECHANISMS Conference Paper uri icon

abstract

  • The mechanical properties and deformation mechanisms of an illite-rich shale have been investigated in triaxial compression experiments at varying confining pressures (Pc), temperatures (T), and strain rates ({lunate}). Shale deforms by brittle processes at low Pc and deforms by semi-brittle processes at high Pc leading to the development of macroscopic fractures, semi-brittle shear zones, and kink bands. Differential stresses (1-3) depend on Pc as well as T and {lunate} at high Pc. The effects of Pc are non-linear and those of T and {lunate} at a selected Pc may be described by an exponential dislocation glide law. The strength of shale depends on water content as well; loss of 2.1 weight % water from clay interlayers increases shale strength by 30%. 1993.

published proceedings

  • INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES & GEOMECHANICS ABSTRACTS

author list (cited authors)

  • IBANEZ, W. D., & KRONENBERG, A. K.

citation count

  • 66

complete list of authors

  • IBANEZ, WD||KRONENBERG, AK

publication date

  • January 1993