TY - GEN
T1 - Comparing new and traditional methodologies for production scheduling in open pit mining
AU - Goycoolea, Marcos
AU - Espinoza, Daniel
AU - Moreno, Eduardo
AU - Rivera, Orlando
PY - 2015
Y1 - 2015
N2 - Strategic open pit mine planning methodologies have traditionally broken up the production scheduling process into two steps. First, push-backs (or phases) are determined. Second, bench-phases are scheduled in time by defining which extracted material should be treated as ore, and which as waste, and deciding how extracted ore should be processed. Traditionally, this last step has been carried out using heuristics. In this article we describe a mixed integer programming (MIP) formulation with which this last step can be optimized, and compare it to Whittle's Milawa algorithm. Our results confirm that MIP techniques for this problem have come to the point where they can solve real-sized problem instances, computing solutions that are better both in terms of objective function and modelling detail.
AB - Strategic open pit mine planning methodologies have traditionally broken up the production scheduling process into two steps. First, push-backs (or phases) are determined. Second, bench-phases are scheduled in time by defining which extracted material should be treated as ore, and which as waste, and deciding how extracted ore should be processed. Traditionally, this last step has been carried out using heuristics. In this article we describe a mixed integer programming (MIP) formulation with which this last step can be optimized, and compare it to Whittle's Milawa algorithm. Our results confirm that MIP techniques for this problem have come to the point where they can solve real-sized problem instances, computing solutions that are better both in terms of objective function and modelling detail.
UR - http://www.scopus.com/inward/record.url?scp=84954285900&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84954285900
T3 - Application of Computers and Operations Research in the Mineral Industry - Proceedings of the 37th International Symposium, APCOM 2015
SP - 352
EP - 359
BT - Application of Computers and Operations Research in the Mineral Industry - Proceedings of the 37th International Symposium, APCOM 2015
A2 - Bandopadhyay, Sukumar
A2 - Chatterjee, Snehamoy
A2 - Ghosh, Tathagata
A2 - Raj, Kumar Vaibhav
PB - Society for Mining, Metallurgy and Exploration (SME)
T2 - 37th International Symposium on Application of Computers and Operations Research in the Mineral Industry, APCOM 2015
Y2 - 23 May 2015 through 27 May 2015
ER -