Stope optimiser

For underground, MiningIQ scans floating-stope templates through an orebody-aligned grid, refines slice boundaries under geotechnical rules, and selects a pillar-compliant portfolio by greedy or MILP set-packing.

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See it

ExampleOptimised stope solids in the 3D web viewer

ExampleDilution envelope: HW/FW skin and overbreak

What it does

O(1) candidate scoring

3D summed-volume tables score every candidate stope in constant time via prefix sums.

Floating-stope scan

Scans variable-dimension templates within bounds, sublevel-constrained, with early pruning — parallelised.

Dilution envelopes

Expands HW/FW boundaries with overbreak and mining recovery; tracks internal, wall-skin and overbreak dilution separately.

Slice optimiser

Optimises each section/sublevel boundary by simulated annealing under width, wall-angle and section-twist limits.

Pillar-safe portfolio

Crown/sill/rib/end-wall separations build a conflict graph, selected by greedy value-density or MILP set-packing.

Curved orebodies + RPEEE

Straightens swinging strike by arc-length resampling; builds a closed RPEEE reporting envelope for JORC / NI 43-101.

How it works — the engineeringTechnical detail

3D integral-volume tables, simulated annealing, greedy region-growing and MILP set-packing via SciPy HiGHS off a shared pillar-conflict graph. The curved-frame path absorbs strike curvature into resampling so the O(1) machinery is preserved.

In: block model (coords, grades, tonnes, values) with a domain/rock-type filter.
Out: DXF (3DFACE for Surpac/Vulcan), OBJ, JSON for the web viewer; RPEEE reporting envelope.

stope_opt/services/ · stope_generator · slice_optimiser · integral_volume · portfolio_selector · pillar_engine