... slope is investigated by means of the upper bound method of limit analysis. The rock mass is treated as a continuum following Hoek-Brown failure criteria. The stability factor corresponding to the non-linear Hoek-Brown failure criterion is obtained by revising the solution following Mohr-Coulomb failure...

... Upstream Oil & Gas efficiency factor footing Montreal criterion Reservoir Characterization bearing capacity 13th international congress rock mass Computation hoek-brown material foundation rock mechanics isrm13 hoek-brown failure criterion shear zone fahimifar ultimate...

... of analysing rock slope stability. Therefore, an empirical failure criterion, the Hoek-Brown failure criterion, has been proposed. It is one of the most widely accepted approaches to estimate rock mass strength. The rock mass disturbance is important and was found having significant influence on evaluating...

... strength Upstream Oil & Gas analysis method criteria criterion douglas failure criterion shear strength average stability number stability number failure criterion jointed rock mass slope stability Douglas criterion gsi 10 hoek-brown failure criterion tangential method limit...

... ABSTRACT The intact rock constant, m i , is one of the three basic input parameters required for the widely used Hoek-Brown failure criterion. In the absence of laboratory testing, guideline charts with m i values based on rock type have been provided by Hoek and Brown and others. Our...

... to assigning many typical failure criteria. The true solutions can be also be bound from above and below. One classical rock yield cri- terion, the Hoek-Brown failure criterion (Hoek et al. 2002), has been incorporated into the numerical upper and lower bound formulations. The Hoek-Brown failure criterion...

... criterion triaxial test failure criterion test result failure strength principal stress ABSTRACT In this paper an extension of the known Hoek-Brown failure criterion to three dimensions is presented. First of all, a recompilation of compression, extension and true triaxial tests made with rocks...

... The Hoek-Brown failure criterion is often applied to a wider range of rocks than the isotropic rock masses to which it is strictly applicable. This paper evaluates the patterns of defects in rock masses using spherical projection contour plots of samples of randomly-generated orientations...

... ABSTRACT: The Hoek-Brown failure criterion provides a practical method to estimate the strength of jointed rock masses. However, based on experience to date, care must be used in applying it to closely-jointed greywacke rock masses in New Zealand. Laboratory testing to determine the rock...

... ABSTRACT: The paper presents an analysis of stresses and ground response curves around a circular tunnel, introducing a seepage and using the Hoek-Brown failure criterion, a perfect elasto-brittle-plastic rock behaviour and a treatment of plastic strains according to an associated flow rule...