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Personne :
Kabuya Mukendi, Joseph

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Kabuya Mukendi

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Joseph

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Département de génie des mines, de la métallurgie et des matériaux, Faculté des sciences et de génie, Université Laval

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ncf11879308

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Résultats de recherche

Voici les éléments 1 - 5 sur 5
  • PublicationAccès libre
    Integrated geotechnical feasibility analysis for an open pit mine in the canadian arctic
    (2011-09-01) Hadjigeorgiou, John; Grenon, Martin; Kabuya Mukendi, Joseph; Leblanc, Denis; Matte, Pierre
    This paper presents the geotechnical results of a comprehensive feasibility case study for the Tiriganiaq pit of the Meliadine project in the Canadian arctic. A geomechanical model was constructed based on the ore reserve block model, and field and laboratory data collection campaigns. The results of oriented core logging were used to identify and zone the mine. Working in parallel with the pit optimization process a series of comprehensive slope stability analyses were undertaken on a block by block basis on selected optimised pits. The innovation of the undertaken approach resides in the smooth integration of the geological and geotechnical models with the optimised ultimate pit geometry to provide input for the slope stability analysis. Rather than working with “representative” slope geometries the actual planned slope geometries were used to compute the slope orientation at bench and inter-ramps levels using Geographical Information Systems (GIS) algorithms. This has allowed the stability analysis of the complete 3D numerical mine model and facilitates the identification of potentially unstable zones. The stability analyses were based on deterministic and probabilistic limit equilibrium techniques. It was possible to investigate the stability of all benches and inter-ramps for the ultimate pit defined by the block model. The factor of safety (FS) and probability of failure (PF) were assessed for every block of the optimised pit. In order to quantify the impact of the prevailing geotechnical conditions on the proposed pit shells a series of multi-criteria stability analyses were employed to assess the potential for localised instability.
  • PublicationRestreint
    A multi criterion approach for the selection of optimal bench width in open pit mines
    (2012-11-01) Hadjigeorgiou, John; Grenon, Martin; Kabuya Mukendi, Joseph
    Open pit design has to address the stability of benches, inter ramp and the global stability of the pit walls. Benches are required to provide a safe working environment for personnel and equipment. Limit equilibrium techniques based on available geomechanical data are used to design safe face slope angles and bench heights. A further consideration is the choice of an appropriate catch basin and bench width. It is expected that a bench should be wide enough to contain any instability from the benches above. This paper addresses the selection of minimum bench width based on legislation, company policy, operating practice and a series of technical criteria. A case study from a mining project in the Canadian arctic is employed to illustrate that the choice of any design criterion can lead to different recommendations. This paper presents systematic multi-criterion based approach that can lead to a more reliable and informed design of optimal bench width in open pit mines.
  • PublicationRestreint
    Evaluating the probability of sliding for mine slope design based on various fracture orientation clusterings
    (2013-08-01) Grenon, Martin; Kabuya Mukendi, Joseph
    This paper presents two case studies where fracture set orientation was quantified using three methods: a simple fracture pole grouping, a Fisher distribution and a Kent distribution. The three fracture orientation representations were then used as inputs for kinematic slope stability analysis. Differences showed up in the probability of sliding for all instability modes considered.
  • PublicationAccès libre
    Contributions à la conception géomécanique des pentes minières : le cas de la fosse Tiriganiaq du projet minier Meliadine
    (2014) Kabuya Mukendi, Joseph; Grenon, Martin
    Ce projet aborde trois aspects de la conception géomécanique des fosses minières à l’aide d’un cas d’étude portant sur la fosse Tiriganiaq du projet minier Meliadine. Dans un premier temps, une méthodologie a été utilisée pour quantifier la fiabilité de la mesure de l’orientation des fractures lors de campagnes de caractérisation géomécanique à l’aide de forages orientés. L’impact du niveau de fiabilité de la mesure de l’orientation sur le résultat d’une analyse cinématique de la stabilité des flancs de la fosse a ensuite été investigué. Dans un second temps, une approche a été développée pour quantifier la contribution des campagnes d’acquisition successives de données structurales sur un site minier à la caractérisation de l’orientation des fractures. L’impact des campagnes successives sur le résultat d’une analyse cinématique de la stabilité des flancs de la fosse a ensuite été investigué. Dans un troisième temps, l’évaluation de la fiabilité des bancs miniers de la fosse par rapport à des critères de fiabilité a été réalisée au moyen d’un outil logiciel bonifié lors des travaux de recherche. Une approche multicritère systématique pour évaluer la fiabilité des bancs miniers à l’aide de cartes de susceptibilité a été proposée.
  • PublicationRestreint
    Étude des critères de fiabilité des bancs miniers : le cas de la fosse Tiriganiaq au Nunavut
    (Canadian Institute of Mining Metallurgy and Petroleum, 2012-01-18) Hadjigeorgiou, John; Matte, Pierre; Grenon, Martin; Kabuya Mukendi, Joseph; Brunet, Francis; LeBlanc, Daniel B.
    Bench stability in mines is an important element of pit design. There is no consensus on which criteria to use to evaluate the bench design reliability. When designing the pits, bench design reliability is analyzed according to one or two criteria. The objective of this paper is to analyze the bench design for the Tiriganiaq pit, part of the Meliadine mine project, with regards to the reliability criteria found in the literature and in practice. The paper presents the similarities and the differences between the results obtained according to the various criteria and it proposes a systematic multicriteria approach to evaluate pit bench design reliability using susceptibility maps.