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Keywords: pillar
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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-04-503
... ABSTRACT: The Swedish Nuclear Fuel and Waste Management Co. is carrying out the Äspö Pillar Stability Experiment at the 450-m-level of the Äspö Hard Rock Laboratory. The major objectives of this experiment are to demonstrate our understanding of brittle failure (spalling) in a fractured rock...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-632
... such as raveling (peripheral block by block rock mass failure), block caving (rock mass break-up and gravity flow mobilization of blocks towards and into an opening) and plug failures (sudden fall of the surface crown pillar as a unit, delineated by well-defined boundary plane discontinuities), and the...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0465
... classification crown pillar stability pillar stability case record geometry metals & mining rock quality expression Proc Carter span Reservoir Characterization Thickness assessment application rock mass probability Surface Crown Pillar pillar span concept ABSTRACT...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0473
...Pacific Rocks 2000. Girard. Uebman. Breeds & Doe (eds) © 2000 Balkema. Rotterdam. ISBN 90 5809 1554 A review of crown pillar stability assessment and rehabilitation for mine closure planning D.J. Hutchinson Earth Sciences Department. University of Waterloo. Ont . Canada ABSTRACT: Evaluation of the...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1823
...Numerical modelling Rock Mechamcs, Auberttn, Hassam & M/tn (eds) ¸ 1996 Balkema, Rotterdam. ISBN 90 5410 838 X Longwall chain pillar design for weak floor conditions Suping Peng Beijing Graduate School China University of Mining and Technology, People's Republic ofChina Guoling Yang & Y.P. Chugh...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1985
... & mining knowledge management mechanism Highwall Mining Artificial Intelligence prediction span numerical model tensile strength pillar interface siltstone material roadway unsupported span voronoi mesh precedent experience maximum unsupported span bedding plane Rock Mechamcs, Aubertin...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1879
.... Gateroad designs at case study mine 1. In the instrumented areas at this mine, two differ- ent gateroad designs were utilized. In the first de- sign, the gateroad system was 66.4 m (218 ft) wide and consisted of a 24 m (80 ft) square center abut- ment pillar flanked by 9 m (30 ft) wide yield pillars, both...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1911
... Upstream Oil & Gas rockmass reservoir geomechanics destressed zone Reservoir Characterization stope crown pillar metals & mining displacement strain energy excavation pillar Magnitude internal stress Orebody destress boundary wall rock mining destress effect sequence...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1993
... Reservoir Characterization Artificial Intelligence panel mining test problem reservoir geomechanics accuracy elasto-plastic discrete element code matrix metals & mining displacement Computation pillar Object-Oriented Architecture tensor algorithm formulation gate pillar...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1667
... ABSTRACT: A series of large-scale laboratory experimental work was performed to demonstrate the failure characteristics of rock cores confined with backfills. The 136 mm diameter core specimens, representing model pillars, were confined with "soft backfills", tailings of varying cement content...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1849
... knowledge management Upstream Oil & Gas contract report Reservoir Characterization strength disintegration subsidence Canmet discontinuity pillar failure mechanism structural geology stability analysis shallow stope rock mass case study metals & mining Thickness Ground...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1929
... structural geology programme metals & mining stope stability reservoir geomechanics mechanism instability span Reservoir Characterization Upstream Oil & Gas hangingwall pillar underground monitoring site grout pack hangingwall stability Scenario hangingwall model mining...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1887
... ABSTRACT : A "Cascading Pillar Failure" can occur in certain room-and-pillar mines when one pillar in a mine layout fails which transfers its load to neighboring pillars causing them to fail, and so forth. Whether failure occurs in a stable, nonviolent manner or in an unstable violent manner...
Proceedings Papers

Paper presented at the 2nd North American Rock Mechanics Symposium, June 19–21, 1996
Paper Number: ARMA-96-1857
... ABSTRACT: The Provence Unit (part of Charbonnages de France group), located in the south-east of France, works a coal deposit at more than 1000 metres depth. On the 12/10/93, the RC2 pillar, located in the shaft protection area, was affected by a rockburst causing important damages. The mine...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0047
... mining method structuring data mining rock engineering practitioner Rock mechanics seismic event Reservoir Characterization Engineering Specialist application seismicity South Africa pillar rock engineering Van der Merwe requirement practitioner rockburst mining Rock Mechanics...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0911
... ABSTRACT ABSTRACT Reef and concrete stabilising pillars are modelled in the two dimensional plane strain code FLAC. The rock mechanics criteria used for comparison are hangingwall stability, pillar stress distribution and stope closure profile, as well as the punching effect of the pillar...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0999
... metals & mining Upstream Oil & Gas Reservoir Characterization strength cover stress pillar vertical stress coal pillar three-dimensional elasto-plastic analysis roadway reservoir geomechanics high wall perpendicular coal seam excavation Duncan Fama safety Highwall Mining...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-1007
... ABSTRACT ABSTRACT: Roof and pillar interaction with weak floor strata in a partial extraction room-and-pillar mining system (such as those found in Illinois) have lead to problems of a) pillar settlement, b) floor heave and squeeze, c) instability due to differential settlement of pillars and...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-0887
... reservoir geomechanics metals & mining stress cell good shear Kingston Queen pillar extraction Orebody instrumentation Reservoir Characterization Upstream Oil & Gas rock mass behaviour sequence sill pillar Wellbore Design hiw 1991 University operation extraction...
Proceedings Papers

Paper presented at the 1st North American Rock Mechanics Symposium, June 1–3, 1994
Paper Number: ARMA-1994-1017
... ABSTRACT ABSTRACT: The local mine stiffness concept has been investigated by a numerical analysis to provide guideline for longwall pillar design in bump-prone coal beds. The results show that local mine stiffness can be used in evaluation of longwall mine design and in control of pillar bumps...

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