Define Destination Parameters
To access this screen:
- On the Haulage Information panel, select Parameters. If the current haulage parameters are valid, the Define Parameters panel is displayed.
Your product assumes the additional distance travelled within a destination (Add Distance) is proportional to the additional amount of material delivered to the destination (Add Material) by a coefficient called Haulage Factor (HF). In other words:
Add Distance = Add Material * HF
Haulage Factor can be defined using example data or directly. Assuming the truck travels extra1.2 min from destination entry to dumping location and extra 1.1 min from dumping location to destination entry for placing additional 2,500,000 t on the destination. If the reference speed is 30km/h the Haulage Factor is calculated as:
That means haulage trucks will travel additional 0.46 m for placing additional 1000 t on the destination.
The Haulage Factor can be also entered directly as meters per 1000 t.
The top of the panel is used to determine the rock types that are accepted at the destination.
| Available rock type(s) | the list of all ore and waste types defined in the Economic Model. Select a label and click Add, or double click a label to add the type to the Accepted rock type list. |
| Accepted rock type(s) | Material types deliverable to this destination. Select a label and click Delete, or double click a label to subtract the rock type from the list. |
Storage limitations
| Unlimited storage capacity | Select for destinations such as crusher or mill. Storage Capacity refers to accumulated tonnage over the mine life. |
| Storage capacity limited to | Select for destinations such as waste dumps or leach pads. |
| Accepts material after period | Enter 0 if the material is accepted from the first period, otherwise the material will only be accepted after the selected period (for example, if period 4 is selected, material will only be accepted from period 5). |
Exit Bench and travel between Pit Exit and Haulage Destination
Note: The scheduler needs the time to be defined prior to optimization but time depends on schedule resulting from optimization. Therefore, there will be differences between trucks hours per period desired and resulting from scheduling.
| EFH distance from pit to destination (m) | Equivalent Flat Haulage. |
| Time from Pit to destination | The average time trucks travel from destination entry to pit exit. EFH distance is calculated automatically. |
| EFH distance from destination to pit (m) | Equivalent Flat Haulage. |
| Exit Bench | The bench at which the trucks exit the pit on the way to this destination. The bench count starts at zero at the top of the block model and increases downward. You can enter the bench directly or double click an elevation in the Bench toe elevation reference list. |
Travel within Haulage Destination
| No travel within Haulage Destination | Selected when trucks do not travel additional distance when delivering new material to destinations such as crushers. |
| Travel within Haulage Destination increases in time | Selected when trucks travel additional distance when delivering new material to destinations such as waste dumps progressing away from the pit. |
| Travel within Haulage Destination decreases in time | Selected when trucks travel reduced distance when delivering new material to destinations such as waste dumps progressing towards the pit. |
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