Mining Plan Components

The mining plan functionality in MINEDW encompasses three major areas that work together to simulate complex mining operations:

Progressive Excavation

MINEDW simulates the progressive excavation of mining operations through element collapse in the finite-element mesh. The software interpolates between known pit geometries to create realistic excavation sequences over time.

Key capabilities include:

  • Depth-based excavation: Simultaneously moves the pit surface outward in all directions, calculating distance between geometries and dividing by time steps

  • Volume-based excavation: Moves the pit surface downward toward the next geometry, based on calculated excavation rates

  • Hybrid approaches: Combine both methods for complex mining scenarios

Open Pit Components

Open pit mining simulations incorporate:

  • Pit geometry evolution: Import and interpolate between .DXF pit designs

  • Seepage face modeling: Accurate representation of water flow through pit walls

  • Pit lake development: Simulation of water accumulation in completed pits

  • Zones of relaxation: Modified rock properties due to blasting and excavation

  • Backfilling operations: Material placement with distinct hydraulic properties

Underground Components

Underground mining features include:

  • Cave zones: Zones of relaxation for block and panel caving methods

  • Dewatering systems: Wells, drains, and pumping configurations

  • Recovery simulation: Post-mining groundwater recovery phases

  • Multiple mining methods: Support for various underground extraction techniques

Integration with Groundwater Flow

The mining plan components integrate seamlessly with MINEDW’s groundwater flow calculations:

  • Dynamic boundary conditions: Automatically update as excavation progresses

  • Material property changes: Account for disturbed rock zones

  • Coupled solutions: Simultaneous solution of flow and excavation

  • Time-stepping coordination: Synchronize mining schedule with flow simulation

Data Requirements

Successful mining plan implementation requires:

  • Pit geometries: 3D surface data (.DXF format) at multiple time points

  • Mining schedule: Dates and production rates

  • Material properties: Hydraulic parameters for disturbed zones

  • Boundary conditions: Dewatering and discharge specifications