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    Where to Make the Transition from Open-pit to Underground?: Using Integer Programming

    241295.pdf (1.235Mb)
    Access Status
    Open access
    Authors
    Chung, J.
    Topal, E.
    Ghosh, Apurna
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Chung, J. and Topal, E. and Ghosh, A. 2016. Where to Make the Transition from Open-pit to Underground?: Using Integer Programming. Southern African Institute of Mining and Metallurgy Journal. 116 (8): pp. 801-808.
    Source Title
    Southern African Institute of Mining and Metallurgy Journal
    DOI
    10.17159/2411-9717/2016/v116n8a13
    ISSN
    2225-6253
    School
    Dept of Mining Eng & Metallurgical Eng
    Remarks

    Published by Southern African Institute of Mining and Metallurgy (SAIMM)

    This open access article is distributed under the Creative Commons license https://creativecommons.org/licenses/by/4.0/deed.en

    URI
    http://hdl.handle.net/20.500.11937/14211
    Collection
    • Curtin Research Publications
    Abstract

    The transition from open pit (OP) to underground (UG) is one of the challenging mining engineering issues. The mines which have the potential to make transition from OP mining to UG mining will eventually come to a point introduced as a ‘Transition Point’ where it needs to determine whether to extend the pit or switch to UG mining. This research proposes a new integer programming (IP) formulation to obtain the optimal transition point from OP to UG mining. The proposed model has been implemented on a three-dimensional (3-D) gold deposit and a two-dimensional (2-D) case study has been used to demonstrate the validity of the model. Due to the large number of variables, strategies have been proposed to shorten the solution time. The proposed model has successfully determined the optimal transition point and generated significantly better undiscounted profit than that of the traditional approach.

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