Abstract
A structured and robust methodology of modeling and simulation can be available through modular stochastic timed Petri nets, including experiments that allow designers to simulate the processes involved in ore production on well-founded estimates. This prerogative guides an experimental research based on real data from an Brazilian open pit mine operation. Three basic simple modules allows to achieve complex models for a real mine. The difference between simulated and measured average productivities are small when compared to an analytic model for the bottleneck and a model implemented in discrete event system language SIMAN, which also validates the simple truck dispatch rule proposed in this paper. As results of the experiment, we derived a valid simulation structure for the open-pit mining process using Petri nets. It was obtained a behavioral evaluation of the efficiency of the structure according to variations in the probability distribution function.
Highlights
Open pit mining operations involve the extraction of minerals from the earth’s surface, as opposed to underground mining
There have been many studies that focus on the modeling and simulating open pit mines
Each approach presents a technique with specifics characteristics and limitations. [1] present a review concerning equipment selection problem for mining
Summary
Open pit mining operations involve the extraction of minerals from the earth’s surface, as opposed to underground mining. The operations are primarily governed by the truck cycle, in which the ore is loaded by loaders at the extraction site and transported to the crusher for processing. A computationally efficient simulation of the mining model can support experiments involving behavior analysis of the loading and unloading processes, which can guide activities that represent a cost of 50-60% of the total investment in the mining process (evaluated as a complex system due to its dynamic, stochastic and uncertain nature). There have been many studies that focus on the modeling and simulating open pit mines. [1] present a review concerning equipment selection problem for mining.
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