Abstract
This paper presents an optimization model, in which fuel consumption of dump trucks and shovels is minimised while the handling demand of dump sites are met in the case of an under-trucked open-pit mine. The model is build using an m-trucks-for-n-shovels dispatching strategy so that a truck could be allocated to different shovels during a shift. The performance of the optimal energy dispatching model was compared to the fixed dispatch method that is still being used in certain mines. The results show that the average litre of fuel consumption per tonne of mineral transported by trucks and that for the truck-shovel system are reduced by 8.82% and 4.49%, respectively. This further leads to a 4.64% fuel savings.
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