Multi-mina
MiningMath’s global optimization algorithm effectively addresses the challenges of integrated multi-mine projects by considering all pits simultaneously. Unlike individual pit optimization, this approach delivers a comprehensive solution that optimizes the entire project, providing a more cohesive and strategic overview.
Not using MiningMath?
Multi-mine projects often hold hidden opportunities for maximizing value. Given their inherent complexity, it’s common to apply simplifications that, while convenient, can lead to sub-optimal solutions when using traditional LG/Pseudoflow methodologies instead of MiningMath. These simplifications may ultimately reduce the project’s potential value from a mathematical standpoint.
Formateo del modelo de bloques
For multi-mine projects, the block model must include all mining regions for simultaneous optimization. If your pits are mapped in separate datasets, it’s essential to follow the steps outlined below:
Work with a single block model or single pit first, ejecute las pruebas iniciales y comprenda esta región antes de manejar la modificación del modelo de bloques.
Try to eliminate meaningless blocks, que no afectaría la solución y podría aumentar la complejidad.
Add a second model or pit to explore the process of working with multi-mine projects. This combined block model file should meet the same requirements as a single model, as outlined on the data formatting page, ensuring unified characteristics.
Experiment with surface adjustments to refine results, filter out regions you don’t wish to mine, and apply other guidance as needed. Since MiningMath surface files maintain a consistent order, using an Excel file (disponible aquí) can be a helpful tool for these modifications.
Use frentes mineros if you’d like to control the material extracted from each region.
Add the other regions and start using everything that you wish.
Restricciones geométricas
The current version of MiningMath applies the same values for tasa vertical, ancho de fondo, y ancho de minería across the entire block model. Sin embargo, in a multi-pit scenario, each pit may have unique geometric parameters that impact selectivity. En estos casos, we recommend setting the parameters for one pit, fixing its solutions (como el forzar y restringir la minería settings have the highest priority), and then starting the optimization of the other pits. This approach ensures that the optimization considers the mass already planned for extraction from the first pit.
Example workflow
An efficient workflow starts by running an initial scenario without geometric parameters to serve as a validation o best-case scenario para la optimización de la programación. próximo, configure a scenario using the geometric parameters of the most selective mine—meaning the smallest widths and highest vertical rate (realidad virtual)—to create the least constrained scenario in terms of geometry. The surfaces generated from this setup can then be used to fix solutions for Mine 1.
Por ejemplo, you could take Surface 1 and adjust the elevation in other areas to reflect the mass extracted in Period 1 from Mine 1, as well as the potential extraction from the second pit. With these results, you can refine surfaces or mining fronts, conduct a sensitivity analysis of the geometric parameters across multiple projects, and still maintain the benefits of global optimization.
