5 Presentations

• 
  10:30 AM - 10:55 AM

  Multi-product mine scheduling optimization under multi-element geological uncertainty

  • Zayneb Brika, presenter, École Polytechnique de Montréal
  • Michel Gamache, Polytechnique Montréal
  • Roussos Dimitrakopoulos, COSMO Stochastic Mine Planning Laboratory, Université McGill

  A new method is proposed to address the multi-product open-pit mine production scheduling problem with multi-element uncertainty. The method is based on extending the Bienstock-Zuckerberg algorithm to the stochastic optimization. A rounding heuristic and a Tabu Search are then applied to obtain an integer solution within 1-2% of optimality in reasonable time.

• 
  10:55 AM - 11:20 AM

  Determining the feasibility of a medium term mine plan using a short term planning optimization model to an underground mine

  • Pedro Sanhueza Soto, presenter, Delphos Mine Planning Laboratory - AMTC - Universidad de Chile
  • Michel Gamache, Polytechnique Montréal
  • Louis-Pierre Campeau, GERAD

  The feasibility of medium-term models may not allow realistic operation of the mine in practice due to their time scale and assumptions made to remove detail from the model. We propose a linear programming model to solve this problem and to study the feasibility of a medium-term model.

• 
  11:20 AM - 11:45 AM

  Simultaneous stochastic optimization of an open pit gold mining complex with supply and market uncertainty

  • Ziad Saliba, presenter, McGill University
  • Roussos Dimitrakopoulos, COSMO Stochastic Mine Planning Laboratory, Université McGill

  This work presents an application of a stochastic framework that simultaneously optimizes mining, stockpiling and processing decisions for a gold mining complex. Supply and market uncertainties are accounted for through orebody and commodity price simulations. Solutions capitalize on synergies of components, manage and quantify risk in strategic plans, consequently recovering more metal and generating higher NPVs.

• 
  11:45 AM - 12:10 PM

  Integreted optimization of short- and medium-term planning in underground mine

  • Louis-Pierre Campeau, presenter, GERAD

  This presentation will present a model for integrated optimization of short- and medium-term underground mine scheduling with variable time discretizations. Different approaches to solve the problem will be discussed as well as results of its application to a Canadian mine data.

• 
  12:10 PM - 12:35 PM

  Optimisation de la planification moyen terme des mines à ciel ouvert

  • Issoufou Abdou Amadou, presenter, École Polytechnique de Montréal
  • Michel Gamache, Polytechnique Montréal

  Optimisation de la planification moyen terme des mines à ciel ouvert. La production est à planifier sur plusieurs périodes tout en créant des tournées pour les équipements qui réalisent les opérations de forage, de dynamitage et d'extraction. Cette planification doit respecter les cibles de production et les performances des équipements