Hybrid Model for Optimisation of Waste Dump Design and Site Selection in Open Pit Mining

Waste management is an unavoidable technological operation in the process of raw material extraction. The main characteristic of this technological operation is the handling of large quantities of waste material, which can amount to several hundred million cubic metres. At the same time, this operat...

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Bibliographic Details
Published in:Minerals (Basel) 2023-11, Vol.13 (11), p.1401
Main Authors: Doderovic, Aleksandar, Doderovic, Svetozar-Milan, Stepanovic, Sasa, Bankovic, Mirjana, Stevanovic, Dejan
Format: Article
Language:English
Subjects:
Algorithms
Analytic hierarchy process
Clean technology
Coal mining
Construction costs
Design
Design optimization
Dumping
Environmental conditions
Environmental law
Genetic algorithms
Heuristic methods
Integer programming
Landfills
Linear programming
Mathematical models
Mine wastes
Mines
Mines and mineral resources
Monte Carlo method
Monte Carlo simulation
Objective function
Ocean dumping
Open pit mining
Raw materials
Refuse and refuse disposal
Scheduling
Simulation methods
Site selection
Waste management
Waste materials
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Summary:Waste management is an unavoidable technological operation in the process of raw material extraction. The main characteristic of this technological operation is the handling of large quantities of waste material, which can amount to several hundred million cubic metres. At the same time, this operation must comply with all administrative and environmental standards. Therefore, optimising waste rock management (particularly haulage and dumping) has the potential to significantly improve the overall value of the project. This paper presents a hybrid model for the optimisation of waste dump design and site selection. The model is based on different mathematical methods (Monte Carlo simulation, genetic algorithm, analytic hierarchy process and heuristic methods) adapted to different aspects of the problem. The main objective of the model is to provide a solution (in analytical and graphical form) for the draft waste dump design, on the basis of which the final waste dump design can be defined. The functioning of the model is verified using an example of an existing open pit. In the case study, 2250 members of the initial population (different waste dump variants) were generated, and a total of 110 optimised solutions were obtained using 15 optimisations. The solution with the best value of the objective function is adopted, and the final waste dump design is created.
ISSN:2075-163X
2075-163X
DOI:10.3390/min13111401