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Development of a mathematical programming model to support the planning of short-term mining

机译：一种数学编程模型的开发，支持短期挖掘规划

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At present, many open pit mines are designed to operate and feed a processing plant with ore characteristics that were defined in the design of the mining business, which are not necessarily the same as those found during the operation. This is the case of Spence Mine, whose design was conceived considering the extraction of primary iron sulphides, however, with the extraction of such minerals, it was necessary to mine and process minerals with secondary enrichment. Then it is necessary to work with a greater selectivity degree in the operation, however the capacities of the mine and operational resources were not designed for this. Thus, the changes in the general conditions of the operation should be considered as a series of geometallurgical restrictions to achieve production schedules. The above facts impacts directly in the short-term planning, whose task is to achieve the goals proposed in productive long-term planning because the company does not have the tools necessary to plan with the degree of selectivity required, so it should be done by hand, discretizating and scheduling the production polygons. Naturally, this manual process in the short term planning deviate sharply from the areas in operation, opening new fronts and benches that result in a significant increase in costs and a loss of the value of the mineral resource to miss the exploitation sequence. The research presented in this paper is related to the development of a mathematical programming model to support the short-term planning, so as to integrate the challenge of selective mining with geometallurgy restrictions, to provide the planner a guide to construction of the polygon of exploitation, guiding the fines production to achieve the goals of the proposed production plan.
机译：目前，许多敞开的坑矿设计用于操作和喂养具有在矿业业务设计中定义的矿石特性的加工厂，这不一定与在操作期间发现的矿石的特性。这就是旋转矿的案例，考虑到初生铁硫化物的提取，其设计具有初始铁硫化物的萃取，因此有必要挖掘和加工级联富集的矿物质。然后有必要在操作中使用更大的选择性程度，但是矿山和运营资源的能力不是为此设计的。因此，操作的一般条件的变化应被视为实现生产计划的一系列几何冶金限制。上述事实直接影响了短期规划，其任务是实现生产长期规划中提出的目标，因为该公司没有规划所需的选择性程度所需的工具，所以它应该通过手，离散化和调度生产多边形。当然，本手动过程在短期计划中偏离了运作的领域，开设了新的前沿和长凳，导致成本显着增加和矿产资源价值丧失剥削序列。本文提出的研究与发育数学规划模型，以支持短期规划，以纳入各种冶金限制的选择性挖掘挑战，为策划者提供了剥削多边形的构建指南，指导罚款生产以实现拟议的生产计划的目标。

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