1. Short- and Medium-Term Scheduling Model for Large Underground Mines
Louis-Pierre Campeau and Michel Gamache
Polytechnique Montreal

2. Context Planning of underground mine activities
Westwood mine, IAMGOLD, Canada
Complexity in underground mine planning:
Number of resources to allocate
Amount of possible allocation
Precedencies
Congestion
Precision
Long-term objectives

3. Model Maximize NPV Mix of preemptive and non-preemptive
Mixed planning horizon
Constraints:
Equipment Capacity, Site Specific Limits, Precedencies,
Backfilling, Mining Limits, Feasibility Constraints
6 years
12 months

4. Results
Present:
Within 5% of optimality in less than one hour of computation
GUI for the use of planners
Futur:
Tests with different instances
Comparison with manual planning
Robust optimization