Define Equivalent Linear Overbreak Slough (ELOS)

ELOS models dilution as a linear extension around the stope, typically used in narrow vein operations or where geometric overbreak is expected due to blasting.

Also see Define Volume Overbreak Slough (VOS).

Activity steps

  1. Define an MSO scenario, block model and other optional settings.

  2. Display the Dilution screen.

  3. Select the ELOS Dilution Type. This is used to simulate uniform overbreaks along stope boundaries.

  4. Define the spatial context where dilution is applied using Application:

    • Geological – Applies dilution relative to geological zones (Near / Far)

    • Geometric – Uses geometric rules based on stope faces (Hangingwall / Footwall)

  5. Choose how dilution values are defined, using Dilution Source:

    • Single Value – Same dilution value applied to all stopes.

    • Model Field – Reads values from block model fields.

    • Curve Table – Uses curve-based rules that respond to shape metrics.

  6. If you are using a Curve Table (see above) to derive dilution values, pick the Dilution at Type setting to decide which parameter controls dilution behaviour. For example, to trigger dilution in relation to stope vertical heights, pick Stope Height:

    • Stope Tonnage

    • Stope Thickness

    • Stope Height

    • Stope Elevation

    • Cross Sectional Area

    • Roof Hydraulic Radius

    • Wall Hydraulic Radius

    • Cross Section Hydraulic Radius

  7. Configure Advanced Dilution Settings.

  8. Define Maximum Waste Percentage.

  9. Save your Dilution screen settings.

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