Fixed Width Stope Splitting

The Stope Splitting tools in MSO post-processing allows you to subdivide larger stopes into smaller units for more practical scheduling and operational implementation.

The Fixed Width splitting type is used to split stopes into segments based on a defined constant width. In some ways, it's the simplest method of splitting parent stopes after they are created.

You choose this type of splitting using the Post Processing screen's Fixed WidthSplitting Type.

In more detail:

Fixed Width Stope Splitting divides a stope into sections with a uniform, predefined width, regardless of local variations in ore geometry. The resulting stopes have consistent dimensions, making them easier to plan, schedule, and mine.

This method is useful when:

  • Mining equipment or methods require a consistent stope width.

  • Standardised stope dimensions are preferred for operational efficiency.

  • The orebody is relatively uniform, or simplification is acceptable.

  • Predictable layouts are more important than closely following ore contacts.

Fixed Width splitting prioritises regularity and repeatability over geometric optimisation, helping translate optimisation results into practical mine designs.

Things to watch out for:

  • Fixed widths may not align well with irregular ore boundaries, potentially increasing dilution or leaving ore behind.

  • In narrow or variable orebodies, the method can generate stopes that are partially uneconomic.

  • Over-constraining width can reduce flexibility in marginal areas.

As with any uniform splitting approach, visual review is recommended to confirm that the resulting stopes remain economically and operationally viable.

Activity steps

  1. Create an MSO scenario and define a block model.

  2. Configure other settings as required.

  3. Display the Post Processing screen.

  4. Check Use Stope Splitting.

  5. Expand Splitting Type and select Fixed Width.

  6. Define a Width for each resulting segment.

  7. Check Use Fixed Width Walls to force wall creation based on the defined width.

  8. Save your settings and continue defining other post-processing options.

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