Transition from open-pit to underground – using Integer Programming considering grade uncertainty
Transition from open-pit to underground – using Integer Programming considering grade uncertainty
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发表时间：
2015
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通讯作者：
Joyce Sze Yee Chung;E. Topal;O. Erten
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作者：
Joyce Sze Yee Chung;E. Topal;O. Erten
露天矿向地下矿过渡点的确定是采矿工程中最具挑战性的问题之一。垂直延伸至相当深度的浅层沉积物将有可能从OP过渡到UG。本文介绍了一种著名的运筹学方法--混合规划（MIP）来解决转移问题。条件模拟用于生成资源模型的实现。因此，利用模拟实现将减少地质不确定性和风险。本文的目的是结合MIP模型和条件模拟技术，优化从OP到UG的过渡。结果，形成了表示可能发生转变的区域的“转变包络”。
The determination of transition point from open-pit (OP) to underground (UG) is one of the most challenging mining engineering problems. The shallow deposits which vertically extend to considerable depth will have potential to make the transition from OP to UG. In this paper, Mixed Integer Programming (MIP), a well-known operation research technique is introduced to solve the transition problem. Conditional simulation is utilised to generate realisations of the resource model. Thus, the utilisation of the simulated realisations will reduce the geological uncertainty and risk. The aim of this paper is to incorporate MIP model and conditional simulation technique to optimise the transition from OP to UG. As a result, a ‘Transition Envelope’ which represents a zone where the transition might occur is formed.