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Titre du document / Document title

A network model to optimise cost in underground mine design

Auteur(s) / Author(s)

BRAZIL M. ; LEE D. H. ; RUBINSTEIN J. H. ; THOMAS D. A. ; WENG J. F. ; WORMALD N. C. ;

Résumé / Abstract

This paper examines the problem of designing an underground mine so as to optimise the development and haulage costs. It focusses particularly on the costs associated with the ramps and shafts which provide passage to andfrom the ore zones. This mine optimisation problem is modelled as a weighted network. The controls (variables for the optimisation process) and operational constraints are described. A main constraint in mining networks is that all ramps have gradients no more than a given maximum value m. In this paper we describe the mine design problem as an optimisation problem, and prove that under reasonable conditions the cost function of an underground mining network with maximum gradient constraint m is convex. The convexity of the objective function ensures the existence of minimum cost mining networks, and theoretically any descent algorithms for finding minimal points can be applied to the design of minimum cost mining networks.

Revue / Journal Title

Transactions of the South African Institute of Electrical Engineers    ISSN  0038-2221 

Source / Source

2002, vol. 93, no2, pp. 97-103 [7 page(s) (article)]

Langue / Language

Anglais

Editeur / Publisher

Kelvin Publications, Johannesburg, AFRIQUE DU SUD  (1909) (Revue)

Localisation / Location

INIST-CNRS, Cote INIST : 4467, 35400010516244.0070

Nº notice refdoc (ud4) : 13957402



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