Haulage Analysis: Quick Start

Destinations for ore and waste types

A destination may accept one or more material types and a material type may have one or more destinations. The destination set must be complete, that is every ore type and every waste type must have at least one destination.

If a material type has more than one destination, Studio NPVS will automatically select the closest active destination for each block.

If all destinations for a material type have limited storage capacities and these capacities will turn up to be insufficient over the schedule time span, the Scheduler will stop before completing the schedule.

Once you added the destinations to the Destination list and set their properties, click the Check complete button to verify that all material types have destinations.

Defining destinations

Add destination name to the Destination list.
Select the destination name and click Parameters.
Make a list of material types accepted by this destination.
Set the remaining parameters. Note that:
he Storage capacity refers to accumulated tonnage over the mine life; a crusher will typically have unlimited storage capacity while a waste dump may have a limit.

Dump Haul Factor applies only to destinations where a truck must travel a distance after reaching the destination entry point; it does not apply to a crusher but may apply to leach pad or waste dump. Dump Haul Factor values are usually small fractions, for example 0.08.
EFH distances from pit exit point to destination entry points and Exit benches where the trucks leave the pit ramp have big impact on meter/ktonnes values.

Set the Gradient Factor in the Rock Destinations dialog (Gradient Factor = Equivalent Flat Haul Distance/Vertical Distance); it will apply to all destinations.

Setting bench exit points

Bench exit points are pushback specific; you must define at least one exit point for each pushback. Note that you can copy the exit point coordinates from any spreadsheet and paste them in the Exit Benches dialog.

For each block on a bench, the distance to an exit point is calculated in an XY plane, the exit point Z-coordinate is used to assign exit points to benches.
An exit point (X, Y, Z) is assigned to a bench B if Z is within 0.5*(bench height) of B's center point elevation.
There can be more than on exit point on a bench. In this case, each block exits by the nearest exit point.
If a bench does not have exit points directly assigned to it, it uses the XY coordinates of exit points of the nearest bench above; or if no bench above has exit points directly assigned to it, the XY-coordinates of exit points of the nearest bench below.

	Related Topics
	Essentials Scheduler Quick Start

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