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Haul Infinity allows you to design haul routes in 3D using intuitive CAD tools. View and edit your network in the 3D viewport and customize all of the critical settings which affect haulage calculations. Make extensive changes and rerun immediately so you can export to your mine scheduling software of choice.

Table of Contents

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Haul Infinity is organized into two tabs:

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Info

Throughout this Tutorial and Exercises, you'll be directed to the Sample Data folder to download ".hinf" or ".csv" files. That folder with all applicable data can be downloaded from the link below:

https://alastribuild.azureedge.net/samples/HaulInfinitySample.zip 

Haul Infinity calculates mine haulage from first principles using the truck specifications, loading parameters and pathfinding across a road network. 

Accessing Haul Infinity

Haul Infinity is launched from the Alastri Hub, which manages all Alastri licenses and applications on your computer. 

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Once in Haul Infinity, click File > New to open a new project.

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Setup

Haul Infinity has a series of setup steps that must be followed to create a valid project.

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Note, that you can't open Network tab until all the setup steps are completed.

  1. Settings step

  2. Trucks Models step

  3. Trucks Limits step

  4. Materials step

  5. Loaders step

  6. Parameters step

  7. Operating Conditions step

Settings

The first step in creating a project is to review the project settings.

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titleLearn more...

Acceleration

Max acceleration (km/h/s)

Maximum "kilometers per hour per second" that a reasonable operator applies to the truck for acceleration.

Max Unloaded Deceleration (km/h/s)

Maximum "kilometers per hour per second" that reasonable operator applies to the truck to decelerate, for truck without load.

Max Unloaded Forced Deceleration (km/h/s)

Maximum "kilometers per hour per second" that reasonable operator applies to force unloaded truck to decelerate.

Max Loaded Deceleration (km/h/s)

Maximum "kilometers per hour per second" that a reasonable operator applies to the loaded truck for deceleration.

Max Loaded Forced Deceleration (km/h/s)

Maximum "kilometers per hour per second" that reasonable operator applies to force loaded truck to decelerate.

Traction

Coefficient of Traction

Used to calculate the maximum force that can be applied to the road without skidding.

Braking Reliance on Traction

How close a reasonable operator will come to skidding before easing off the brakes. 

Retarder

Use Retarder Speed Limit

Stops trucks from exceeding their OEM retard curve.

Max Use of Retarder

How heavily a reasonable operator applies the brakes.

Calculation Precision

Accuracy

Only to be changed by Alastri staff. Controls the number of iterations in numerical integration.

Zero Acceleration Tolerance

Only to be changed by Alastri staff. Controls rounding in acceleration calculations.

Transfer Speeds

Entrance Speed Unloaded

Maximum unloaded entry speed to the network from the ramp (other speed limits also apply).

Entrance Speed Loaded

Maximum loaded entry speed to the network from the ramp (other speed limits also apply).

Exit Speed Unloaded 

Maximum unloaded exit speed to the network from the ramp (other speed limits also apply).

Exit Speed Loaded

Maximum loaded exit speed to the network from the ramp (other speed limits also apply).

Terminal Speeds

Arrival Speed Unloaded

Final arrival speed at digger. Usually zero (could be non-zero if cruising into Spot At Loader).

Arrival Speed Loaded

Final arrival speed at dump. Usually zero (could be non-zero if cruising into Spot At Dump). 

Departure Speed Unloaded

Starting departure speed from dump. Should always be zero. 

Departure Speed Loaded

Starting departure speed from digger. Should always be zero. 

Corners

Corner Lookahead Distance

The arc distance used to calculate the angle of deviation for cornering speeds.

Path Finding

Try Return on Same Route

Forces trucks to return the way they came, even if there is a faster alternative route. 

Advanced

Various cache settings

Only to be changed by Alastri staff. 


Truck Models

Truck models define the work capacity of trucks under different conditions. 

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Each truck is defined by its axle weights, rimpull, retard, fuel and trolley assist curves (if applicable).

Truck Limits

Truck limits define how a truck interacts with the road network under different conditions. 

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TKPH Limits

For this tutorial, leave the TKPH limits at default values. 

Engine Loads

For this tutorial, leave engine loads at default values.

Cornering Limits

For angles of deflection greater than ninety degrees (a right angle turn), reducing the cornering speed to 15 km/hr.

Speed limits

For loaded downhill gradients of -9.5% or steeper, reduce the loaded downhill speed limit to 20 km/hr.

For loaded uphill gradients of 9.5% or steeper, reduce the loaded uphill speed limit to 10 km/hr.

Materials

Material properties are used to calculate payload volumes, dry tonnes and wet tonnes for productivity calculations. 

  • Add "Ore" with a density of 2.7

  • Add "Waste" with a density of 2.5

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Loaders

Loader types define the dig rates for cycle time and trucking calculations. 

  • Add "EX2500"

  • Add "R9250"

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Parameters

The parameters table holds cycle time inputs for every combination of loader, truck, and material.

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Note

If entering historical overrides, double check the source data and confirm which "Load Time" you are referencing.

Make sure to override both the Loader Load Time and Truck Load Time, adding or subtracting the Truck Spot Time as applicable, 

Operating Conditions

When querying a specific haul, the operating conditions can be used to quickly toggle one or more input parameters to different values.

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Run Setup steps

When you have completed all the Setup steps of the Setup Task list, click the blue play button to run the last step or all steps to confirm and move to the Network tab.

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Network

The Network tab is the main workspace in Haul Infinity, where you can draw a 3D road network over of existing pits and topos, and interact with it to create nodes and routes for haulage.

Below listed only brief instructions for setting up a sample model. Full description of the Network tab, see here.

Import Surfaces

Road networks can be drawn directly onto survey surfaces and mine designs. Surfaces are imported through the Overlays panel (full description of this panel features see /wiki/spaces/212AD/pages/30940563).

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Importing a surface

  1. Go to the Network tab.

  2. Find the Overlays panel in the right of the screen.

  3. Press the blue plus icon to import surfaces.

  4. Navigate to the sample data folder and import .

    1. "clippedcontours.dtm",

    2. "pit.dtm",

    3. "wd1.dtm",

    4. "wd2.dtm".

  5. The Decimation Results dialog will appear, where you can see the triangle count and specify the decimation required (in this demo project, decimation is not required). Make the necessary changes and click OK.

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Zooming

Press the Zoom All button   in the /wiki/spaces/212AD/pages/30938427to center the data. The topography, pit design and dump design should now be centered in the viewport. These are the surfaces on top of which the network will lie.

Overlays panel

The Overlays panel is used to work with the displayed layers. This is a /wiki/spaces/212AD/pages/30941576 present in all Alastri applications.

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  • You can show or hide any of the surfaces by clicking the eye icon .

  • The closed lock icon  prevents the drawing tool from snapping to that surface (drawing a pit road beneath a topo, for instance).

  • Tick the edges icon  to toggle visibility of the underlying strings.

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Changing surface colors

  1. Expand out the folders in the Overlays panel (manually or using Tools button > “Expand All” option).

  2. Open the dropdown in the far right column.

  3. Select a new color.

  4. Press OK.

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Info

When the lock icon is closed, the draw tool will not snap to that surface. Use this setting to draw through surfaces to the data underneath.

Draw a Network

Using our overlays as reference, we are going to draw in a road network upon which the truck fleet will run.

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Pan:

or middle click and drag

Zoom:

or mouse scroll

Rotate:

or right click and drag

Snap Mode

The snap mode dictates what we can connect segments to while drawing. The shortcut keys <Q>, <W>, <E> can be used to switch between the three modes.

Snap to points on the network

Snap to surface model

Snap to constant elevation

Draw Tool

Press the pencil icon  and left click on the surfaces to draw roads that connect the pit and dump. The shortcut key <D> can be used to start and stop drawing.

Tip 1:

To draw a ramp, display your pit blocks from below.

This way you will immediately see how the isolated blocks become connected (painted green in viewport and marked with green tick in the Blocks panel on the left).

Tip 2:

Show Mouse Text (from the toolbar) and when drawing networks on ramps check a tooltip and make sure the slope is not too big.

 

Draw Assistance

These features may be used to draw roads when there is no existing design. 

Adds a vertical offset to the drawn segments.

Adds a gradient to the drawn segments. 

Draw+Ctrl+Left click

Open a coordinate menu for absolute and relative coordinates. 

Define Sources and Destinations

Nodes are fixed load points (or dump points) that we manually connect to the network. Typically these represent pit centroids, dump centroids, stockpiles and crusher bins.

Types of Nodes

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Node

Source

Destination

Bench Exit

Yes

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Lift Entry

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Yes

Stockpile

Yes

Yes

Crusher

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Yes

Waypoint

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Promoting a Node

Creating a node is as simple as right clicking a point on the network and selecting "Promote Point to Node".

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Creating nodes example

  • Find the toe of the pit ramp and promote to a "Bench Exit". The corresponding node centroid will appear at the selected point.

  • Find the crest of the dump ramp and promote to a "Lift Entry". The corresponding node centroid will appear at the selected point.

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Speed Limits and Traffic Rules

Road signs can be dragged and dropped onto the network to reproduce the site road rules.

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No Entry signs have a speed limit of zero, which prevents trucks travelling along that segment. 

Set Road Rules

  • Drag and drop some signs onto the network to create safe intersections and appropriate speeds.

  • Select some segments > Right click > "Set Speed Limits on Selected Segments".

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  • Select some points > Right click > "Set Final Speed on Selected Points".

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Remove Road Rules

Stop signs and slow points can be removed from segments via the right click menu. 

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Info

Segments have forward and backward speed properties. Enable them in Tools > Project Settings > General > Segment Direction Indicator.

Query a Haul

In order to make cycle time calculations, Haul Infinity needs to know the material type, loader and truck type.

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Hauls can be reactivated by selecting them from the History menu in the Route Selection panel.

Animations

Haulage animations can be turned on or off from the animations button .   Animations can slow down some calculations times. If you are using an older computer, turning animations off may help conserve performance.

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