... excavation to the extent of complete closure of the openings. The engineer is faced with the problem of adequately predicting the ultimate status of openings based upon evaluations of time-dependent analysis and observations made during the excavation period. A finite element program VISROCK, which...

... 660,000 tonnes at 12.23 g/t (104 million U.S @400/ounce). Ore widths vary from approximately 5 to 12 meters. ARMA/NARMS 04-438 EXCAVATION OF A SHAFT DESTRESS SLOT AT THE NEWMONT CANADA GOLDEN GIANT MINE Ms. Jennifer McMullan Chief Engineer, Newmont Canada Golden Giant Mine Professor W. F. Bawden Chair...

... and 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...

... stress measurement machine learning Artificial Intelligence classification primitive field stress stillwater complex excavation deformation field stress 1. INTRODUCTION The Stillwater Mine, the largest primary producer of palladium and platinum in the Western Hemisphere, is situated...

...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...

... tool for underground excavation .. Most potential applications will use jets for slot cutting at the excavation perimeter excavation (the Odys- sey Theater in St Louis) or where a narrow cut is required for specific purposes (cutting sculptures). The de- sign of a cutting lance is constrained when...

... which allows for modifications of the construction method. In this context it is emphasized that, based on a eontinuous 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...

...Pacific Rocks 2000. Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema. Rotterdam. ISBN 90 5809 1554 Measurements of cutter forces for a TBM machine in Aspo underground excavation Z.X.Zhang, S.Q.Kou & P.-A.Lindqvist Division of Rock Engineering, Lulea University of Technology, Sweden ABSTRACT...

...Pacific Rocks 2000, Girard, Liebman, 8reeds & Doe (eds) © 20008alkema, Rotterdam, IS8N 90 5809 155 4 Primary excavation of rock with an impact tool H.J.Handewith Seattle, Wash., USA ABSTRACT: This paper defines the principal aspects of primary and secondary rock fracture by impact. It discusses...

... 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...

... of the case presented shows that induced stresses around the excavation are greatly influenced by the post-peak characteristics of the fault. Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) © 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Stability analysis of an underground mine stope near a major...

... 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...

.... The first step concerns the main well bore excavation which is achieved by making free the displacement at the wellbore wall. The second step concerns the simulation of the branch's excavation and this is accomplished by removing the corresponding elements. The results of these analyses can be extrapolated...

... assessment Upstream Oil & Gas excavation stiffness loading Reinforcement Effect material property rock joint mechanical behavior tunnel crosshole test Reservoir Characterization roughness crown area specimen rock mass s-wave velocity Pacific Rocks 2000, Girard, Liebman, Breeds & Doe...

... 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...

... 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...

... groundwater levels, historic surface and underground mining and the variability of geologic strata. Expansion of the open pit toward the south encroached well into the City Limits of Lead South Dakota. The design called for excavation of the open cut down 800 ft at an overall slope angle of 48° adjacent...

... 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...

...Pacific Rocks 2000, Girard, Liebman, Breeds & Doe (eds) O 2000 Balkema, Rotterdam, ISBN 90 5809 1554 Poroelastic modeling of drying effects around deep cavities excavated in shales A.Giraud, E Homand & M. Souley Laboratoire Environnement Giome'canique et Ouvrages, ENSG, Nancy, France 0.Ozanam ~ V D...

... Upstream Oil & Gas horizontal displacement reservoir geomechanics displacement Rotterdam jointed rock mass rock engineering Reservoir Characterization modeling TH cavern Balkema yufin rock structure stability excavation tunnel Engineering cavern lining rock mass numerical...