Application of optimized models through direct block scheduling in traditional mine planning.
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2018
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Many papers have been published by the scientific community on the
development of techniques that use direct block scheduling (DBS) to solve
open pit production scheduling problems, and have compared the results
obtained with DBS to those obtained with conventional methods for mine
planning. The most significant advantage of using DBS is the possibility of
maximizing the economic value to each project. However, until recently, the
computational complexity of DBS has prevented it from being used to solve
problems on an industrial scale, where there are a large number of mine
blocks to deal with and many constraints.
While much research has already been conducted and many new tools
and algorithms have been developed to solve this global open pit
production-scheduling problem, this article proposes the use of optimized
models obtained through DBS as part of the conventional medium-term
planning methodology to take advantage of its benefits without being
hindered by its limitations.
Three different approaches to medium-term planning were compared.
First, a renowned software package that is used in the mineral industry was
used to execute conventional medium-term scheduling. Then, DBS was used
to perform the same task. Finally, a combination of DBS and conventional
scheduling was tested. Using the results provided by DBS, sectorization of
specific areas was included in the conventional methodology to guide the
scheduling and thus allow this combination to produce real benefits, even
for large projects.
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Open pit mining, Mine planning, Production scheduling
Citação
CAMPOS, P. H. A; HORI, C; MORALES, N. M. Application of optimized models through direct block scheduling in traditional mine planning. Journal of the Southern African Institute of Mining and Metallurgy, v. 118, p. 381-386, 2018. Disponível em: <http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2225-62532018000400011>. Acesso em: 12 fev. 2019.