A method that optimises mining complexes that are
comprised of multiple processing destinations, open pits and underground
operations is presented. Mining, blending, processing and transportation
decision variables are simultaneously optimised while accounting for geological
uncertainty. The method uses a simulated annealing algorithm at different
decision levels to generate a stochastic-based extraction sequence and
processing policies. A case study shows its ability to generate a higher net
present value while facing a reduced amount of risk when compared to traditional
optimisation methods.CITATION:Montiel, L, Dimitrakopoulos, R and Kawahata, K, 2014.
Globally optimising open pit and underground mining operations under geological
uncertainty, in Proceedings Orebody Modelling and Strategic Mine Planning
Symposium 2014, pp 201–212 (The Australasian Institute of Mining and Metallurgy: Melbourne).