Journal article

Multi-objective short-term production scheduling for open-pit mines: a hierarchical decomposition-based algorithm

Michelle Blom, Adrian R Pearce, Peter J Stuckey

ENGINEERING OPTIMIZATION | TAYLOR & FRANCIS LTD | Published : 2018

Abstract

This article presents a novel algorithm for solving a short-term open-pit production-scheduling problem in which several objectives, of varying priority, characterize the quality of each solution. A popular approach employs receding horizon control, dividing the horizon into N period-aggregates of increasing size (number of periods or span). An N-period mixed integer program (MIP) is solved for each period in the original horizon to incrementally construct a production schedule one period at a time. This article presents a new algorithm that, in contrast, decomposes the horizon into N period-aggregates of equal size. Given a schedule for these N periods, obtained by solving an N-period MIP, ..

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