“…Like any technique evolutionary algorithms have advantages and disadvantages, but because of easy development and implementation, the possibility of multi-criteria optimisation and easy collaboration with other techniques (heuristics) their popularity nowadays has grown. Evolutionary algorithms have been already used in the mine planning issues [1,12,13,15,17,24,31,33,42,43], more often for open-pits. Use of evolutionary algorithms in mine planning allows to take into account most of the problem constraints and specific conditions.…”
Abstract. In the paper optimisation of coal production in multi-plant company is described. Optimisation problem and proposal of optimisation criterion were formulated. As modern solution in this area the developed evolutionary algorithm is presented. An example of calculation results is presented.
“…Like any technique evolutionary algorithms have advantages and disadvantages, but because of easy development and implementation, the possibility of multi-criteria optimisation and easy collaboration with other techniques (heuristics) their popularity nowadays has grown. Evolutionary algorithms have been already used in the mine planning issues [1,12,13,15,17,24,31,33,42,43], more often for open-pits. Use of evolutionary algorithms in mine planning allows to take into account most of the problem constraints and specific conditions.…”
Abstract. In the paper optimisation of coal production in multi-plant company is described. Optimisation problem and proposal of optimisation criterion were formulated. As modern solution in this area the developed evolutionary algorithm is presented. An example of calculation results is presented.
“…Mining strategies need to satisfy a number of constraints on the order that material can be mined -see [10,7,12,13,16,17,15,14,25,5,6,9,24]. In the usual MILP formulation these constraints are typically included as a set of precedence constraints.…”
Section: State Constraintsmentioning
confidence: 99%
“…Indeed, there exists a substantial, and growing, literature on this topicsee, for example, [10,7,12,13,16,17,15,14,25,5,6,9]. Also, several commercial software packages are available which can be used for mine planning -see [1][2][3][4].…”
Section: Introductionmentioning
confidence: 99%
“…Typical procedures, e.g., [24] formulate the problem as a mixed integer linear programme (MILP). A variety of solution strategies have been used including the commercially available software CPLEX, branch and cut methods [10], genetic algorithms [7,[12][13][14][15][16][17], simulated annealing [25], etc.…”
In this paper we show that the problem of optimal mine planning can be cast in the framework of receding horizon control. Traditional formulations of this problem have cast it in the framework of mixed integer linear programming. In this paper, we present an alternative formulation of the mine planning problem using the "language" of control engineering. We show that this alternative formulation gives rise to new insights which have the potential to lead to improved computational procedures. The advantages are illustrated by an example incorporating many practical features of an actual mine planning problem.
“…Whilst the application of stochastic search methodologies is not new both in slope stability [16,17] and mining engineering [18,19], the GA proposed here is a non-standard one and allows a relatively quick convergence to the optimal solution showing excellent stability and robustness, both in case of problems with many variables and enforcing the GA to work with small populations (micro-GA).…”
Abstract:A Genetic Algorithm (GA) with nested zooming strategy is proposed for the determination of the optimal open pit mine design.Different genetic procedures are applied to increase robustness, namely two typologies of admissible mutations for the elite subpopulation subjected to zooming and mutation and reproduction for the remaining individuals. In order to further improve convergence rate, a user-defined population percentage, depending on individuals fitness, is replaced with new phenotypes, enforcing chromosomic renewal.Several comparisons with (traditionally used) dynamic programming approaches are provided both for 2D and 3D open pit mines. Both small and large scale mines are analyzed, to benchmark the code in presence of several variables.Results show that the procedure proposed requires a very limited computational effort, both for challenging problems with several variables and when a micro-GA (populations with few individuals) is adopted for small scale problems.
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