Heuristic and Exact Approaches to Optimize the Production Scheduling of Mines Transitioning from the Open-Pit to Block Caving

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dc.contributor.authorAnani, Angelina
dc.contributor.authorFlores, Ignacio Ortiz
dc.contributor.authorLi, Haitao
dc.contributor.authorJalilzadeh, Afrooz
dc.date.accessioned2025-01-20T16:07:35Z
dc.date.available2025-01-20T16:07:35Z
dc.date.issued2024
dc.description.abstractMine planning engineers perform production schedule optimization to determine the time sequence in which ore blocks should be extracted to maximize value. For mines transitioning from a surface mining method to an underground extraction method (transition mines), the production schedule optimization is complex with no applicable solutions. We present two optimization approaches for the transition mine production scheduling problem (TMPSP)-a disintegrated heuristic approach and an integrated exact approach-and investigate the conditions in which an integrated approach to the TMPSP is superior to a disintegrated approach. Mixed-integer linear programming (MILP) models are developed to optimize the production schedule per period and crown pillar placement for the TMPSP. The MILP is implemented in Python and solved with the Gurobi (R) Optimizer. A case study is performed to validate the models, with a comparative analysis to obtain operational insights. The computational results show that the integrated model achieves 5% higher NPV than the disintegrated approach with less computational effort.
dc.description.funderAgencia Nacional de Investigacion y Desarrollo (ANID)
dc.fuente.origenWOS
dc.identifier.doi10.1007/s42461-024-01085-0
dc.identifier.eissn2524-3470
dc.identifier.issn2524-3462
dc.identifier.urihttps://doi.org/10.1007/s42461-024-01085-0
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90007
dc.identifier.wosidWOS:001324495000002
dc.language.isoen
dc.revistaMining metallurgy & exploration
dc.rightsacceso restringido
dc.subjectTransition mine
dc.subjectDisintegrated approach
dc.subjectIntegrated approach
dc.subjectProduction scheduling
dc.subjectMixed-integer linear programming
dc.titleHeuristic and Exact Approaches to Optimize the Production Scheduling of Mines Transitioning from the Open-Pit to Block Caving
dc.typeartículo
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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