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Keywords: discontinuity
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Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-497
... 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 is developed to take advantage of the...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-473
... ABSTRACT: Elastic wave velocities in rocks vary with effective stress due to the presence of stress-sensitive discontinuities within the rock such as grain boundaries, microcracks, fractures, etc. Because of the low ratio of the thickness to lateral extent of hydrocarbon reservoirs...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-506
... ABSTRACT: The frictional characteristics of a discontinuity are generally non-uniform and thus slip may start from a region of low shear strength (weak zone) and propagate into a region of high shear strength (strong zone). Hence failure may occur progressively before the peak strength is...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-520
... 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...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-575
... 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...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-584
... 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...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0403
... that actually occurred and the performance of the remedial measures. risk and uncertainty assessment dimension metals & mining mitigation measure study area discontinuity risk assessment roughness risk management colluvium mitigation surface description boulder catalog effective...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0675
... 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 in...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0375
... 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. This...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0531
... approach used to maintain wall stability while maximizing the drawdown rate is described. Factors that controlled the drawdown rate are discussed. Reservoir Characterization drawdown critical joint stability law enforcement quarry discontinuity investigation public safety groundwater level...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0501
... Washington discontinuity sculpture Upstream Oil & Gas displacement instrument requirement System Installation rushmore national memorial dummy gage cable rapid city transducer Mount Rushmore national memorial blankenship rock block installation ABSTRACT ABSTRACT: An...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0703
... 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...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0319
... 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...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0667
... 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...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0953
... 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...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1051
... Fluid Dynamics cavern excavation mechanical behavior Reservoir Characterization displacement discontinuity excavation coupling analysis traction permeability incremental displacement jump jointed rock mass former analysis equation Upstream Oil & Gas constitutive equation...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0967
... 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...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-2025
... ABSTRACT: Kinematic constraints may 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...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1977
... the shear 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...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-2039
... element method failure mode Rock Engineering Structure Aydan Artificial Intelligence Thickness discontinuity Upstream Oil & Gas numerical analysis stability configuration displacement rock slope Contact Element finite element method mpa mpa mpa mpa rock mass interface...

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