G-2025-15
Simultaneous stochastic optimization of mining complexes: Integrating waste management and progressive reclamation with encapsulation (Poster)
et référence BibTeX
Effective waste rock management is a crucial aspect of long-term planning of industrial mining complexes. When waste management is not considered during the optimization of the production schedule, it leads to an inaccurate assessment of the financial outcomes of the mining complex. This oversight can be especially costly when dealing with potentially acid-generating (PAG) waste rock, as it introduces the risk of significant treatment costs with rehabilitation, primarily due to acid rock drainage (ARD). Traditional practices don’t optimize production schedules while addressing this risk and fail to integrate geological uncertainty so as to create a production schedule resilient to waste misclassification and uncertain supply of material extracted from the related mines. To prevent or mitigate ARD, proactive measures such as encapsulating PAG material with non-acid-generating (NAG) material are essential. Furthermore, stricter legislation reinforces the necessity to restore mining sites to an acceptable post-mining condition using ongoing reclamation to ensure environmental stability and reduce long-term liabilities. This work integrates waste management and progressive rehabilitation into the simultaneous stochastic optimization framework, employing gradual encapsulation of PAG material to promote progressive reclamation, thereby reducing long-term environmental and financial liabilities. Uncertainties in acid generation are addressed using geostatistical simulations of the rock’s geochemical properties. A case study at a copper-gold mining complex demonstrates that incorporating waste management using progressive encapsulation has a minimal financial impact.
Paru en février 2025 , 1 page
Axe de recherche
Application de recherche
Document
G2515.pdf (430 Ko)