Truck Library

Create a Truck Library

Use the Truck Library option to define the specifications, that is, speeds, loading time, bucket capacity, truck capacity, etc., for the Haulage Profile module. This information will be saved to the haulage_truck_library.spc file. This file will be stored in your resources area, that is, the directory pointed to by the ENVIS_RESO environment variable.

Click Truck Library button from the Haulage toolbar.

Note: There is no limit to the amount of equipment that can be defined.

Instructions

On the Open Pit menu, point to Haulage Profile, then click Truck Library.

Tip

The panel utilises grid controls to manage the grid information, i.e. right-click context menus, that allow you to perform options such as hiding columns, cutting, copying, and pasting cells, and inserting and deleting rows. Right-click in the grid area to display the context menu. Descriptions of the available options are listed below.

Truck Definitions

This column will list all of the defined trucks located in the haulage_truck_library.spc file. To create or adjust a truck definition, select the button. Once selected, the Truck Definition panel displays. Refer to the Creating/Editing Truck Definitions section below for more information.

Truck Units

This section to specify the units of measurement for the defined trucks, that is, kilometres per hour, feet per minute etc. These units can be changed at anytime. Once a new unit of measurement has been chosen, the values will be automatically converted.

Click OK to save the specifications to the haulage_truck_library.spc file.

Vulcan will check the truck library for a version number. If this number does not match the latest version, you will be prompted to run validation.

Click to display the Truck Definition panel and create a new truck definition.

This panel is divided into three separate tab panels.

Specification
Performance
Route Delays

The measurement units selected through the Haulage Truck Library panel are displayed next to each tab.

For example, if Metres/Min was selected, then (in Mins) displays next to the Specification tab and (in Metres/Min) next to the Speeds tab.

Specification

Identification

Name

Enter the name of the truck.

Description

Enter a description for the defined truck. For example, ' Cat 3516B-EUI engine '.

Materials

This section, which is separated into 4 separate tab panels, allows you to define the materials classifications. Use the Defaults tab if any of the values, that is, loading and dumping times, are applicable to all materials. If only the Defaults tab contains values, then the values for the Ore, Waste and Other tabs won't be used.

Note The term Other is used to describe any material other than ore or waste. For example, stockpile material would be referred to as Other.

The following fields must be specified for each material, that is, Ore, Waste and Other. If a value is not specified, then the corresponding value under the Defaults tab will be used.

Materials

Capacity (in tons)

Enter the truck's capacity.

Load/Dump Times

Loading

Enter the amount of time needed to load the material onto truck.

Dumping

Enter the amount of time needed to dump the material (at any location).

Bucket Capacity

Enter the bucket capacity, that is, the amount of material that the shovel bucket holds.

Loader Cycle time

Enter the amount of time (in minutes) it takes for the shovel to pick up the material and dump it onto the truck.

Spot Time at

Loader

Enter the amount of time that the truck spends waiting in line to be loaded with material.

Spot Time at

Crusher

Enter the amount of time that the truck spends waiting in line at the crusher. This value is only applicable to Ore material.

Dump

Enter the amount of time that the truck spends waiting in line at the dump. This value is only applicable to Waste material.

Other

Enter the amount of time that the truck spends waiting in line at the destination. This value is only applicable to Other material

Delays

Average Delay

Enter the amount of additional time spent making the trip.

Calculate Equivalent Mass-Distance

The EMD value is calculated with the following formula:

where:
VDF = Vertical Distance Factor (unitless)
x, y, z - coordinate values
block tons = (volume x density) or (xlength x ylength x zlength z density)
If uncertain, leave this option unchecked.

Calculate Equivalent Distance

If uncertain, leave this option unchecked.

Vertical distance factor

The vertical distance factor is user defined. If the VDF component is active, then the Report Settings panel will have an option to store the value.

Performance (formerly Speeds)

Use the Standard tab to define the speed of the truck.

On the Flat

This section to enter the truck's speed and fuel consumption over a flat surface. A colour and line type can be defined for each cutoff. These attributes will be used in the Route Cycle Estimation option.

Loaded

This section to specify the truck's speed when loaded.

Empty

This section to specify the truck's fuel consumption when empty.

Import

Select Import to use pre-existing data from a.csv,.dat, or txt file.

Preview

Select Preview to view a preview of Truck Performance Data.

Note Ensure that all cutoff grades, which are entered as a percentage, are in ascending order (lowest to highest).

Example Truck Speeds

If the truck's speed shown above were used, then the following would occur:

Full capacity over a flat surface - A truck speed of 32K/hr will be used for line segments that are between -3% and 3%

Empty over a flat surface - A truck speed of 45 K/hr will be used for line segments that are between -3% and 3%

4% capacity uphill - A truck speed of 28 K/hr will be used for line segments that are between 3% and 5%

4% capacity downhill - A truck speed of 28 K/hr will be used for line segments that are between 3% and 5%.

Truck Definition - Performance - Rimpull panel

The Rimpull tab allows you to calculate cycle times and fuel usage from Rimpull curves as an alternative to speed curves. The Rimpull curve is calculated from the following calculation:

Rimpull = Weight Truck [kgs] x (gradient [%] + rolling resistance [%]/100

Loaded/Empty

This section to specify the truck's speed when going uphill or downhill. A colour and line type can be defined for each cutoff. These attributes will be used in the Route Cycle Estimation option.

Import

Select Import to use existing data from a.csv,.dat, or txt file.

Preview

Select Preview to view a preview of Truck Performance Data, an example of which is shown below. The diagram displays the truck's rimpull curve.

Rimpull Curve Preview

Note Ensure that all cutoff grades, which are entered as a percentage, are in ascending order -- lowest to highest.

Warning Make sure to cap the speeds for the uphill and downhill speeds for the truck requirements may be underestimated.

Route Delays

Use this option to input distances or sections where the truck speed is slower, for example when it starts up or turns a corner.

Delays at Truck Start

Enter a set of distances from the beginning of the route where the truck is still accelerating up to normal speed and its fuel consumption is therefore higher. For each increment in the distance enter the truck's predicted speed and fuel consumption.

Also apply startup delays to return trip

Apply the parameters entered in Delays at Truck Start to the calculations of the return trip.

Delays at Based on Radius of Curvature

For Radius enter a distance from the turning point of a corner on the route. This distance is used to calculate delays on all corners on the route. For each increment in distance from the turning point enter the predicted truck speed and fuel consumption.