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Theses and Dissertations (Mining Engineering): Recent submissions
Now showing items 21-39 of 39
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(University of Pretoria, 2013)This study investigated different underground bulk air heat exchanger (>100 m3/s) design criteria. It was found that no single document exist covering these heat exchangers and therefore the need was identified to generate ...
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(University of Pretoria, 2013)Scattered mining was practised on Kusasalethu Mine (previously Elandsrand Gold Mine) prior to 1998, but as mining proceeded deeper, it was no longer a feasible option. The scattered mining method would have resulted in ...
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(University of Pretoria, 2006-12-01)Gullies have been regarded as the "artery" in mining because they provide the only access route for material, people and ore in stopes. It thus becomes vital to provide the industry with suitable guidelines for gully ...
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(University of Pretoria, 2009-12-08)For the evaluation of mineral development projects, it is imperative to consider the risks involved in mineral exploration and development and to bear in mind that an adjustment for these risks is a common practice which ...
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(University of Pretoria, 2009-12-09)The ability of an explosive to break rock is influenced considerably by the extent of confinement in the blasthole and it is believed that confinement is improved by the use of stemming. The aim of this paper is to present ...
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(University of Pretoria, 2007-11-09)In general, as the uniaxial compressive strength of rock samples is tested, the uniaxial strength of the rock decreases with increasing sample size until a strength is reached beyond which no further decrease in strength ...
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(University of Pretoria, 2012-10-04)As a result of the rising electrical energy costs in South Africa, a method was sought to reduce the overall electrical consumption of typical shaft systems. A typical shaft configuration was analysed and the primary energy ...
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(University of Pretoria, 2007-07-30)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2008-08-06)This thesis addresses the problem of designing roof support systems in coal mines. When designing the roof support, it is necessary to account for the uncertainties that are inherently exist within the rock mass and support ...
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Determining the physical and economic impact of environmental design criteria for ultra-deep mines (University of Pretoria, 2007-07-24)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2011-07-14)The global mining industry has been experiencing an unprecedented period of change, driven by merger and acquisition activities which ran at record highs at all levels of the sector (Goldsmith, 2008). Metals became the new ...
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(University of Pretoria, 2011-07-14)This dissertation will explore the process followed in the design of a sub-level open stope (SLOS) by using examples of actual stopes scheduled to be in production between August 2006 and February 2007. The main objective ...
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(University of Pretoria, 2006-07-20)The testing undertaken for this dissertation is intended to help quantify the various time-dependant deformation processes around typical deep level hard rock tabular excavations. Three mechanisms were investigated and two ...
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(University of Pretoria, 2006-06-07)Instability in stope panels in shallow mines manifests itself as rockfalls from the hangingwall. Rockfalls from unstable stope panels vary in size from rockfalls between support units, to rockfalls spanning between pillars ...
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(University of Pretoria, 2008)The potentially hazardous nature of open pit mining requires the application of sound geotechnical engineering practice to mine design, for the purpose of permitting safe and economic mining of any commodity within any ...
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(University of Pretoria, 2006-05-19)The study that is described in this thesis deals with stope support design from a rockmass stiffness approach. Three models were developed and combined into a single one in the third part of the study in an attempt to ...
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(University of Pretoria, 2005-03-31)The mine planning process converts resources into economically mineable reserves, focusing on value addition and risk reduction. Equipment selection is traditionally addressed late in the process and addresses production ...
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(University of Pretoria, 2007-07-24)In this thesis a previously unknown mechanism of failure in multilayered slope profiles is identified. In some conditions this mechanism does not confirm to the known failure models (relating to circular failure) used in ...
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(University of Pretoria, 2007-03-05)Please read the abstract in the 00front part of this document
Now showing items 21-39 of 39