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Introduction
Keep these relationships in mind when making changes to the schedule logic and calendar values.
Item | Description |
|---|---|
Agent | Picks the blocks and executes schedule logic on them. |
Dependencies | Only some blocks are available to mine at each moment. |
Incentives | With the available blocks, prefer to mine some over others. |
Destination Logic | With the selected block, find a destination. |
Steps Logic | With the selected source and destination,
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Fleets | With each selected fleet, find a truck and loader combination with remaining hours. |
Loader Types | With the selected loader, consume loader hours at the loader production rate. |
Truck Types | With the selected truck, consume truck hours at the truck production rate. |
Once the sum of movement between a source and destination hits a Constraint, then no more material may be moved between those points.
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Summary of issues that may be returned by the schedule logic:
Scheduling Mode | Issue Type | Cause | Solution |
|---|---|---|---|
Optimise Products | Infeasible Solution | The optimiser could not find a destination for a material, either due to constraints or to product specifications. | Either reduce the ore mined or relax the capacities/constraints/grade limits that are constricting the movement |
Invalid Cycle Time | Haul Infinity could not find a route. | Either there is no route in Haul Infinity, or the route contains steep segments/dynamic haulage | |
Overflow | The optimised destinations use more equipment hours than available. | Either reduce tonnage targets or reallocate equipment to shorter hauls | |
Constrain on Trucks | Constrained by Steps Logic | If a step rule uses multiple fleets, both fleets must have available hours. | Either reduce tonnage targets or reallocate equipment to shorter hauls |
Stockpiles reclaim defaults to zero | Calendar > Stockpiles > Reclaim Target = 0 | Manually set rehandle targets for each stockpile in each period |