Ultra-fast Pit Optimiser

GeoMine FlowPit (FlowPit) is a ultra-fast pit optimization software. FlowPit implements the industry standard Lerchs-Grossmann's 3D pit optimization algorithm, but with a novel implementation. FlowPit's highly efficient and scalable implementation achieves a superior magnitude speed-up in comparison to competitors. For small block models (with about 1 million non-air blocks), FlowPit takes seconds to complete a single optimization run as opposed to hours. For very large block models (with 15~30 million non-air blocks), FlowPit takes full advantage of today's multi-core CPUs to determine the optimum final pit limit within half an hour. For huge block models (with 50~100 million non-air blocks), without super-blocking, FlowPit Ultimate can determine the optimum pit limit within 3 hours on modern i7 PCs equipped with 32gb ram.

In order to arrive at a solution in a realistic time frame for large block models, most of the existing mine planning software for open pit mining (pit optimisers) use super-blocking to drastically reduce total block counts. Consequently, this materially affects the solution accuracy which has not been quantifiable up until now. Usually a single careless 2x2x2 reblocking can result in a final pit with up to 7% profit loss and a slight pit slope change (please refer to the Impact of Reblocking on Pit Optimization for a detailed analysis). With FlowPit, mine planners no longer need to super-block their block model and even if they do, they now have a proper tool to evaluate the impact of their chosen reblocking configuration on their block model. This advance in computational speed with guaranteed optimality makes FlowPit an effective tool not just for determining the optimal pit limit, but also for Sensitivity Analysis that allows the planner to quickly conduct reliable "what if?" scenario analyses.

FlowPit Key Benefits

  • Power: features a powerful nested pit generator and a Sensitivity Analyser that is capable of incorporating geological uncertainty. Includes two options for creating nested pits: LG nested pits for creating LOM schedules (with iScheduler) that maximizes NPV and equal-sized geologically optimum pits for creating smooth LOM schedules (with iScheduler) having relatively constant production rates.
  • Unique: full 3D optimization support for rotated, stratified narrow dipping ore seams to minimize dilution.
  • Speed: easily offers an order of magnitude speed-up over other competing products.
  • Scalability: 64-bit parallel version can handle huge block models (with up to 100 million non-air blocks) with precision and accuracy without use of super-blocking. FlowPit v5 has been successfully used to optimize a real-life block model with over 89 million non-air blocks without super-blocking!
  • Simplicity: intuitive GUI front-end that displays interactive 3D pushbacks, periods, cross sections, and plan views all in one integrated package
  • Flexibility: versatile Visual Cell Scripting engine, Report Generator, Slope Geometry Modeler, support for sub-blocks and partial blocks, and the ability to preview, inspect and correct any potential errors of input block models help round the package.
FlowPit Screenshots
System Requirements:

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

Demo – Tutorials Feature List