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Keywords: excavation
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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-04-433
... ABSTRACT: The phenomenon of time-dependent deformation is commonly observed in underground openings where mining excavations are the main sources of mechanical loads. To predict the long-term deformations in soft rocks, a viscoplastic law has been implemented in a two-dimensional finite...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-438
... operations). stress cell destress slot excavation metals & mining instrument seismicity stope stress reduction Reservoir Characterization extraction ore shaft wall newmont canada vertical stress shaft pillar deformation shaft elevation shaft destress slot stress change 1.0...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-518
... stiffness of immediate roof members jointing in immediate roof cleat density in coal. roof displacement immediate roof Upstream Oil & Gas Thickness Modeling & Simulation displacement metals & mining weighting interval unsupported roof excavation soft roof Longwall...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-516
... stress measurement machine learning Artificial Intelligence classification primitive field stress stillwater complex excavation deformation field stress ABSTRACT: Primitive field stresses are the stresses that prevail today in the rock as a result of the original geologic formative...
Proceedings Papers

Paper presented at the Gulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS), June 5–9, 2004
Paper Number: ARMA-04-618
...1. INTRODUCTION The stability of wedges formed around underground excavations in blocky rock masses is a common problem in rock engineering. The wedges are formed by intersecting discontinuities and the free face created through excavation of an underground opening. Under the influence of gravity...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0055
... wall decorations. Increased use and reliability suggest that waterjets can be considered as a practical tool for underground excavation.. Most potential applications will use jets for slot cutting at the excavation perimeter excavation (the Odyssey Theater in St Louis) or where a narrow cut is...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0113
... of the construction method. In this context it is emphasized that, based on a continuous evaluation of geological and geotechnical monitoring data, the predicted geological model is adjusted to the actual conditions. Based on the updated model, excavation and support is adjusted accordingly. The...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0011
... side force Loading Rate tangential force transmitter solid waste management cutter force boring machine normal force rotation speed cutter head calibration receiver excavation nonnal force gauge cutter cutter strain gauge front cutter thrust ABSTRACT ABSTRACT: A...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0049
... predict excavation rate performance. Items that are referred to for specific discussion are: This paper covers laboratory and field testing pertaining to the development of an impact slot-cutting/ridge breaking tool for excavating rock. This tool was developed for use on a hydraulic breaker with the...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0481
... ABSTRACT ABSTRACT: In contrast to typical excavations in civil engineering construction, mine openings often create locally reduced confinement and relaxation or tension in the backs or walls. Boundary-parallel stress reduction, or relaxation, can have devastating consequences in structurally...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0375
... case presented shows that induced stresses around the excavation are greatly influenced by the post-peak characteristics of the fault. Artificial Intelligence strength stability analysis Upstream Oil & Gas displacement metals & mining peak displacement Simon criterion constant...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0595
... ABSTRACT ABSTRACT: There is a fairly common belief that any rock excavation task can be accomplished with explosives if standard cautious blasting formulas are used appropriately, especially when accompanied by vibration limits Unfortunately, that conclusion is often not true. In some cases...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0261
... & Gas circular hole stability excavation pore pressure radial displacement poroelastic stress analysis wellbore Simulation borehole junction analytical solution numerical result tangential stress stress analysis Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0641
... joint stiffness reinforcement borehole numerical approach shear assessment Upstream Oil & Gas excavation stiffness loading Reinforcement Effect material property rock joint mechanical behavior tunnel crosshole test Reservoir Characterization roughness crown area specimen...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0619
... ABSTRACT ABSTRACT: This paper presents a case study on the optimum design of excavation and support system of a shallow tunnel which is faced with the unexpected bad geological condition during excavation, The detailed geological investigation shows that the rock mass in the region of concerns...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0583
... ABSTRACT ABSTRACT: In tunnel excavation by blast beneath the surface structures in urban area, the characteristics of ground vibration induced by blast and its influence on surface structures are analyzed by the field test and the numerical analysis on dynamic behaviors of the structure...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0547
... metals & mining calibration prediction data mining version 3 stability excavation mining expansion homestake mining company displacement stope backfill geometry open cut deformation material property FLAC model south wall numerical modeling ABSTRACT ABSTRACT...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-0587
... ABSTRACT ABSTRACT: Little data is available in the literature on the response of heritage masonry structures to excavation-induced vibrations. This paper presents unique data and observations relating to deep rock excavations performed on Parliament Hill, Ottawa, Canada, during the summer of...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1095
... permeability Fluid Dynamics penneability vapor excavation equation intrinsic permeability gas mixture discretization gallery diffusion cavity Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) O 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Poroelastic modeling of drying effects around deep...
Proceedings Papers

Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1059
... ABSTRACT ABSTRACT: Rock fracturing and failure in the walls and vaults of large underground openings and especially at the intersections of different caverns, tunnels, adits, etc., are commonly associated with stress concentrations due to the rock mass unloading during the excavation...

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