... pressure is present. flow in porous media pore pressure experiment Carthage Marble Reservoir Characterization Fluid Dynamics diffraction sandstone reservoir geomechanics geological material marble plane strain measurement limestone Upstream Oil & Gas mpa pore pressure Neutron...

... a mechanisms-based fracture model for geological materials. Our modified Mohr-Coulomb fracture model is developed in the framework of tensor representation theory, which allows for a direct translation of fracture mechanisms and the observed inelastic deformation into a mathematically precise description...

... for measuring the strain within geological materials under load. The structural variability and non-uniform crystallinity of geological materials, however, create many complexities in the intensity patterns that must be analyzed to quantify strains within the material. The attenuating and scattering properties...

... and generally measure either bulk deformations or deformations of exposed surfaces. This paper describes the development of a neutron-diffraction based strain measurement technique that will permit the mapping of the lattice strains and macroscopic stresses within a geological material in a triaxial stress...

... with plasticity type responses. Thus, these are not directly applicable to geological materials whose inelastic responses originate from inherent large-scale heterogenities, microcracking, strain softening, etc. Proposed fracture mechanics methods for geological materials and their associated problems...

... & mining geological material Rock mechanics application floor heave failure problem 3-room entry creep deformation pillar Artificial Intelligence material property stress envelope protective stress envelope stabilization Simulation stability complex ground stress control method Chapter...

...Weldon W. Wiikening J-Zntegral Measurement in Geological Materials la R6solution du J-Integral pour les Matreaux Geologiques J-Integral Messung von den Geologishen Materialen Weldon W. Wilkening Staff Consul tant Terra Tek, Inc. 420 Wakara Way Salt Lake City, Utah 84108 ABSTRACT The path...