... ABSTRACT Rock mass strength and deformation estimation is necessary for the design of rock excavation and stability. Various empirical approaches are available for a reasonable estimate of these parameters. To eliminate randomness and to incorporate more preciseness and reliability...

.... machine learning Upstream Oil & Gas heterogeneity Suorineni reservoir geomechanics strength mechanism Reservoir Characterization rock mass strength mass strength Rock mechanics shell problem Artificial Intelligence criteria confinement failure process propagation high confinement...

... Recent studies by the authors into the behaviour of jointed rock masses using direct shear testing have confirmed that joint spacing has a significant effect on rock mass strength. The rock mass failure envelopes assessed from these tests have been compared to failure envelopes obtained using...

... the determined pillar factor of safety has limited meaning. A more realistic approach would be to consider pillar stability in terms of time to failure. However such an approach would require a reasonable estimate of the in-situ pillar mass strength and a validated methodology linking the time to failure...

... A retrospective analysis of some geomechanical classifications for rock masses is presented. It is shown that estimates of rock mass strength according to geomechanical classifications developed, e.g., for construction of tunnels and for ore mines can differ very much. Development...