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Keywords: distortion
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Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-319
... distortion compressive stress roof control plan compressive strain rock mass corner 2 sequence estimation GSI 1. INTRODUCTION Room-and-pillar and longwall mining systems develop underground excavations whose stability must be considered over their service lives. The primary concern is around...
Proceedings Papers

Paper presented at the 47th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2013
Paper Number: ARMA-2013-130
... as a reliable method to monitor displacements in open pit mines Artificial Intelligence total movement distortion close range photogrammetry photograph metals & mining focal length plane total station PhotoModeler monitor displacement calibration crp technique photogrammetry prism...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0637
... Characterization Upstream Oil & Gas Lorraine metals & mining creep potential creep strain Artificial Intelligence strength dilatancy angle reservoir geomechanics take account constitutive model distortion coupling iron ore mechanism failure surface plasticity pillar Simulation creep...
Proceedings Papers

Paper presented at the The 26th U.S. Symposium on Rock Mechanics (USRMS), June 26–28, 1985
Paper Number: ARMA-85-0439-1
... is a particularly important influence since it provides the immediate support that together with the ribside pillar provides a balanced reaction to strata loading. The traditional ribside fracture and asymmetric arch distortion of gateroads at U.K. longwalls demonstrates the low 'stiffness' and high compressibility...
Proceedings Papers

Paper presented at the The 25th U.S. Symposium on Rock Mechanics (USRMS), June 25–27, 1984
Paper Number: ARMA-84-0747
.... The restrictions can be further relaxed where specially constructed subsidence-resistant structures are present. Structures subjected to subsidence movements may experience bend- ing, angular distortion, torsion, contraction or extension, tilt, and translation, in different conditions, depending on site conditions...
Proceedings Papers

Paper presented at the The 16th U.S Symposium on Rock Mechanics (USRMS), September 22–24, 1975
Paper Number: ARMA-75-045
... in the principle of virtual work. If a de- formable body or a set of such interconnected bodies is imagined to undergo a defined deformation and/or displacement (virtual distortion) which is consistent with both external and internal restraints then for limiting equilibrium the nett work done is zero. Should...
Proceedings Papers

Paper presented at the The 14th U.S. Symposium on Rock Mechanics (USRMS), June 11–14, 1972
Paper Number: ARMA-72-0263
... metals & mining Reservoir Characterization Upstream Oil & Gas ground surface extraction ratio structural geology amd plant site Rock mechanics subsidence distortion reservoir geomechanics strength hillman vein operation procedure pillar vein surface distortion safety...
Proceedings Papers

Paper presented at the The 10th U.S. Symposium on Rock Mechanics (USRMS), May 20–22, 1968
Paper Number: ARMA-68-0573
... of Young's modulus of 10 bars are assumed, then the prestresses are of the order of 170 to --160 bars. NATURE OF QUARTZ d SPACING DISTORTIONS IN SANDSTONES The nature of the d spacing distortions in quartz grains, detected by the X-ray technique and interpreted as residual elastic strains, was ex- plored...

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