Integrating mining loading and hauling equipment selection and replacement decisions using stochastic linear programming. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Santelices, Gabriel; Pascual, Rodrigo; Lüer-Villagra, Armin; Mac Cawley, Alejandro; Galar, Diego
• Is Part Of: International journal of mining, reclamation and environment. Volume 31:Issue 1(2017)
• Page Start: 52
• Page End: 65
• Publication Date: 2017-01-02
• Subjects: Equipment selection -- equipment replacement -- production assurance -- linear stochastic programming -- mining industry; Mining engineering -- Periodicals; Mineral industries -- Environmental aspects -- Periodicals; Abandoned mined lands reclamation -- Periodicals; 622.292
• DOI: 10.1080/17480930.2015.1115589
• Languages: English
• ISSNs: 1748-0930

Abstract

Abstract: Equipment selection is a key strategic decision in the design of a material handling system, because an improper one will lead to operational problems and unnecessary investment costs. It involves determining the number and combination of loaders and trucks which will move the material, fulfilling a specified production schedule. Previous works have addressed this problem with deterministic approaches, without considering the inter-dependent availability of trucks and loaders. In order to fill this gap, we developed a stochastic model that combines the selection and equipment replacement problems, subject to a stochastic production rate constraint. This is a new idea that will help decision-makers to decide faster and more reliable. The proposed model optimises the fleet by minimising the total life cycle costs. To solve it, we used a linearisation approach that reduces the computational effort. We tested our approach with a benchmark model, using a mining case study. Results indicate that the solutions ensure with a high probability a determined production target, producing good robust solutions compared to the deterministic counterpart.