AOSTRA's underground test facility (UTF): mine-assisted recovery under difficult conditions

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Mots clés : Underground testing;Tunnelling;Drilling;Oil sands
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Publication: CIM Bulletin
Auteur(s): B. Morrison
Mots clés: Underground mining, Haulage systems, Electric haulage systems, Kiruna Electric System
Numéro: 921
Volume: 82
Année: 1989
Texte
Publication: CIM Bulletin
Auteur(s): M.E. Sirkka
Mots clés: Underground mining, Bulk mining methods, Mining methods, LHD, Electric LHD, Technical development, Electrical mobile equipment
Numéro: 921
Volume: 82
Année: 1989
Texte
Publication: CIM Bulletin
Auteur(s): G.R. Larocque
Mots clés: Safety, Underground mines
Numéro: 921
Volume: 82
Année: 1989
Texte
Sommaire: An investigation into the problem of atmospheric fog in Canadian mines is described. Fog occurs in several mines and the reduced visibility can result in the closure of workings for safety reasons. Information on the mechanisms of fog formation are discussed and the methods for improving conditions are reviewed with their relative costs.
Publication: CIM Bulletin
Auteur(s): A.E. Hall, S.B.V. Stewart
Mots clés: Underground mining, Fog, Underground environment, Mine ventilation, Air quality control, Environmental control
Numéro: 921
Volume: 82
Année: 1989
Texte
Sommaire: High narrow backfills of significant strike length approach the stress conditions associated with a free standing wall but this lower bound design approach is not considered efficient for earth structures. This paper considers the design of high narrow backfills using upper bound limit analysis, retaining wall theory with backfill arching and centrifuge model tests. Complex toe support situations pertaining to operational factors at Falconbridge's Lockerby Mine are investigated. It is shown...
Publication: CIM Bulletin
Auteur(s): R.J. Mitchell
Mots clés: Rock mechanics, Underground mining, Modelling, Centrifuge modelling, Backfills
Numéro: 921
Volume: 82
Année: 1989
Texte
Sommaire: This paper considers four aspects of autogenous grinding. Part 1 discusses statements on power efficiency of autogenous grinding compared to conventional crushing and grinding systems. It also demonstrates how high-power efficiency can be obtained from autogenous grinding systems. Part 2 considers a simple method of testing ores to determine the type of autogenous plant which can treat these ores on a commercial basis. A comparison of testing for simple small plants vs large plants or complex...
Publication: CIM Bulletin
Auteur(s): A.R. MacPherson
Mots clés: Autogenous grinding, Grinding systems, Power efficiency, Processing plants, Systems design
Numéro: 921
Volume: 82
Année: 1989
Texte
Sommaire: The most cost-effective method of placement of the high-strength fill used in the Cannon Mine's overhand cut-and-fill bench slopes was determined to be truck haulage. Constraints imposed by the mine layout dictated the use of a truck which could dump its load in a fifteen-foot high drift. The Dux Teledumper truck was selected as the most suitable unit for this application based upon operational and maintenance parameters which included a telescoping, tilting dump box; large load capacity; and...
Publication: CIM Bulletin
Auteur(s): J. Baz-Dresch
Mots clés: Underground mining, Haulage systems, Maintenance, Equipment, Truck haulage, Backfill
Numéro: 921
Volume: 82
Année: 1989
Texte
Sommaire: The composition and the possible utilization of a slag sample from a nickel smelter operation in the Sudbury district were investigated. The sample containing 0.136% Ni, 0.10% Co and 0.29% Cu could be characterized as afayalite slag with a sulphide bearing glass matrix. While thefayalite contains most of the Co, Ni is enriched within both sulphides and fayalite. Cu is only present in higher amounts in sulphides or metallic droplets. This, as well as the small grain sizes of the mineral...
Publication: CIM Bulletin
Auteur(s): Gerhard Heinrich
Mots clés: Metallurgy, Nickel smelter slags, Metal distribution, Benefic-iation, Pressure leaching, Construction materials
Numéro: 921
Volume: 82
Année: 1989
Texte
Sommaire: Atomic Energy of Canada Limited is constructing an Underground Research Laboratory (URL) as part of a comprehensive program to evaluate the concept of nuclear fuel waste disposal deep in crystalline rock formations. Careful blasting methods have been used to minimize damage to the excavation surfaces. Good wall quality is desirable in any excavation. In excavations required for nuclear waste disposal, the objective will be to minimize blast-induced fractures which may complicate the sealing...
Publication: CIM Bulletin
Auteur(s): R.F. Favreau
Mots clés: Blast design, Controlled blasting, Blast simultation, Nuclear waste disposal, Smooth wall blasting, Engineered excavation, Blast damage, Burst-out velocity, Tension wave, Brisance, Crack front, Permeability, Fragmentation, Half barrels
Numéro: 921
Volume: 82
Année: 1989
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