Open-Pit to Underground Transition Optimiser

Do you have a near-surface deposit with considerable vertical extent that has the potential to be mined by a combined method of open-pit and underground mining? As the reserve in an open-pit gets depleted, many medium to large open-pit mines face challenges in determining the best cut-over point from open-pit to underground mining.

GeoMine Optunimizer (Optunimizer) is an Open-pit to Underground Transition Optimizer. Optunimizer allows a mine planner to determine the optimal transition zone from open-pit to underground mining with the objective of maximizing total profit of the entire mine. Optunimizer is built on top of two ThreeDify's mature optimizers: FlowPit for pit optimization and Stopemizer for stope and caving optimization. As a result, the transition plan created by Optunimizer is optimal for both open-pit and underground mining - there is no longer a need for a trial and error design process.

Optunimizer not only determines the location of the best transition zone, but also provides the planner an option to use a crown pillar within the transition zone. Furthermore, Optunimizer is agnostic to underground mining methods: it can be applied to all stoping methods as well as all caving methods (including longwall, sublevel caving and block caving). Combined with iScheduler for development and production scheduling, Optunimizer has the following key capabilities:

Optunimizer Key Capabilities

  • Defines the optimum transition zone from open pit to underground mining, eliminating the needs for a trial and error process and thus greatly improving productivity.
  • Maximizes NPV (or other variable) by defining the best overall option considering infrastructure development and mine preparation with the aim of ensuring plant feed (ramping up, stockpiling, etc.) within one integrated software package, GeoMine.
  • Fast integrated design and scheduling of both open-pit and underground mines with resource constraints.
  • Handles big model (> 30mil blocks) without super-blocking due to our industry-acclaimed high performance pit and stope optimization engines.
  • Supports different mining methods. Including all stoping methods as well as the block caving method (please note that support for longwall and sublevel caving is under way).
  • Flexible, you decide how you want to calculate the dollar values of a block when mined as part of a open-pit and when mined as part of a stope, using our Visual Formula Editor. No hard coded inflexible user interface and no need for scripting either.
Optunimizer Screenshots
System Requirements:

OS: 64-bit Windows 7, 8.1 and 10
Disk Space: 10 GB