...-dimensional transient indirect BEM is developed to solve coupled thermo-poroelastic problems. The indirect BEM has two sub-formulations, namely, displacement discontinuity (DD) method and fictitious stress (FS) method. The DD method is particularly suitable for crack-shaped problem. A mixed FS-DD model...

... reservoir geomechanics Upstream Oil & Gas wave velocity elastic wave velocity measurement anisotropic change equation andα 33 model 1 Reservoir Characterization tensor pore pressure sandstone horizontal stress stress field high value contour anisotropy discontinuity stress...

... ARMA/NARMS 04-506 Slip on Non-Homogeneous Discontinuities Ovunc Mutlu Department of Civil Engineering, Purdue University, West Lafayette, IN, USA Antonio Bobet Department of Civil Engineering, Purdue University, West Lafayette, IN, USA Copyright 2004, ARMA, American Rock Mechanics Association...

... reservoir simulation consistency parameter invariant bifurcation analysis continuous traction Upstream Oil & Gas strong discontinuity bifurcation condition instability traction cap plasticity model constitutive model deformation discontinuous bifurcation discontinuity weak...

... Abstract: Slope stability designs are largely dependent on rock mass and more specifically discontinuity characterization. Traditional discontinuity characterization methods (scanline and cell mapping) have many problems associated with time, safety, accuracy, and human bias. This study shows...

... Reservoir Characterization criterion failure mode plane structural geology artificial interstratified rock strength parameter discontinuity strength failure criterion Upstream Oil & Gas interstratified rock mass interstratified rock kaolinite orientation specimen model...

... (if determinable), and failure mode (as determinable) .. scanline mapping to assess the spacing of the various discontinuity sets present. 2.1 Slope Morphology During the site investigation, morphological features were ·recorded by SubTerra personnel to supplement Twentymile Coal Company's '.I-inch to 200-feet...

... in evaluating the caving potential of a particular mine project. metals & mining borehole data practical application Upstream Oil & Gas Simulation discontinuity normal discontinuity stereonet joint network rock mass orientation size distribution discontinuity total random joint...

... ABSTRACT ABSTRACT: The behavior of rock masses near underground openings can be influenced by the presence of major geological discontinuities. To model such discontinuities, the ground control engineer must rely on constitutive equations to describe their complex mechanical behavior...

... of weakness, or discontinuities, in the rock such as joints, faults, shear zones, contacts between rock Photograph I. Quarry at nonnal pool before drawdown. Photograph 2. Quarry near completion of 21 0 feet of drawdown . 532 types, foliation planes, and zones of rock weathering. Good geologic information...

... understood the significance of the discontinuities in the sculpture. The process of sealing discontinuities has been on- going since the completion of the sculpture. In addi- tion, one particular discontinuity has been the sub- ject of an informal and infrequent displacement- monitoring program for about 20...

... scatter of the data, a new set of relations between the rock mass deformation modulus and RQD was developed and suggestions for using the new relations to estimate the rock mass deformation modulus are presented. mean discentinuity discontinuity condition RQD int relation discontinuity rock...

... and Jager 1987; Roberts et al. 1993). The support system in the face area must, in addi- tion, be able to provide areal coverage to prevent falls of loose rock. This is particularly important where discontinuities delineating unstable keyblocks are unfavourably oriented. Ideally, therefore, the support...

... orientation roughness Artificial Intelligence Pattern Recognition Upstream Oil & Gas Euclidean Distance machine learning discontinuity data analysis quantization method bias index borehole algorithm cluster analysis discontinuity stereonet minimum value inclination angle...

... orientation is more clearly demonstrated. Reservoir Characterization calculation discontinuity jointed rock mass keyblock size orientation keyblock characteristic relative error probability maximum keyblock unit-cell method joint-set orientation rock mass approximation variation...

... of a cavern and obtain the distribution of displacement, stress, strain and permeability of rock mass and the deformation of joints. Fluid Dynamics cavern excavation mechanical behavior Reservoir Characterization displacement discontinuity excavation coupling analysis traction permeability...

... of parametric studies. reservoir geomechanics metals & mining displacement friction regime cohesion investigation total displacement Reservoir Characterization orientation Simulation stability excavation Upstream Oil & Gas moderately jointed rock mass discontinuity jointed rock...

... greatly affect the stability of a jointed rock mass. While traditional limit equilibrium methods typically do not adequately incorporate kinematics, the Discontinuous Deformation Analysis (DDA) method actually models the kinematics of motion along discontinuities. Analysis of the "two block sliding...

... strength parameters, i.e. cohesion and angle of friction of rock medium. Most frequently the tests of discontinuity shear strength are carried out in the laboratory and field conditions. However, there are also examples, in which forced shear surface does not cover the discontinuity. Such a tests...

... ABSTRACT : The analysis of structures in discontinuous rock masses has been receiving a particular interest in rock mechanics and rock engineering. A technique based on the finite element method together with the contact element to model rock masses consisting of blocks of arbitrary shapes...