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Risk control in ultimate pits using conditional simulations

机译:使用条件模拟的最终凹坑的风险控制

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In this work we study how to incorporate risk control to the generation of ultimate pits when orebodies are modeled through a finite number of conditional simulations. To control risk we consider a chance constraint on the value of the ultimate pit. We incorporate this measure into the generation of ultimate pits by solving a stochastic programming version of the ultimate pit problem. We compare this stochastic programming problem to previous approaches such as generating the ultimate pit for each simulation and the hybrid pit approach introduced by Whittle and Bozorgebrahimi. We also study the effect of using different number of simulations in the generation and evaluation of ultimate pits.
机译:在这项工作中,我们研究如何通过有限数量的条件模拟建模ORebodies时将风险控制纳入最终凹坑的产生。控制风险,我们考虑机会对最终坑的价值限制。通过解决最终坑问题的随机编程版本,我们将此措施纳入了最终坑的产生。我们将该随机编程问题与先前的方法进行比较,例如为每种模拟产生最终坑,并通过诸数和BozorgeBrahimi引入的混合坑方法。我们还研究了使用不同数量的模拟在终极坑中使用不同数量的模拟的影响。

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