Dump Sequencing

To access this screen:

Activate the Schedule ribbon and select Model >> Dumps >> Sequence.

The Dump Sequencing screen is used to select a set of dump evaluation data and generate a dump block sequence.

Note: You must first use the Dump Evaluation screen to generate the data required as input into the dump sequencing process.

Dump Sequencing

The dump data files are generated by running the Dump Evaluation activity. The dump definition file initially holds the BlockID and volume of each dump block. After sequencing the dump blocks, the dump block sequence number is added to this file.

You can select a lift entry for each lift by picking a dump block. A truck icon indicates the lift entry. Only one lift entry is allowed per lift. You can delete a lift entry by selecting the row in the grid and pressing Delete.

Using The Sequencer

The EFH Factor (effective flat haul factor) is used to factor the distance between lift entry blocks on adjacent lifts. This compensates for the slower speed on a ramp and will mean that although a block on the lift above may be the next nearest block, the actual cycle time is longer and dumping should instead continue on the current lift.

The Sequence button is used to calculate the dump block sequence number for each block based on a dumping sequence that minimises haul distance. The dump block sequence number is then stored in the definition table.

Once the blocks have been successfully sequenced, you can view the dump sequence in the VR window by selecting Start Animation. The animation is launched automatically and the view is centred on the current dump wireframe.

Activity steps:

Display the Dump Sequencing screen.
In the Dump Data group:
- Select a dump definition object from the Definition list.
- Select a dump wireframe object from the Wireframe list.
- Select a dump block outlines (strings) object from the Outlines list.
- If you want to filter the data by lift number, select Filter by Lift and select a lift number from the Lift Number list.
In the Lift Entry Blocks group, review the Lift Block grid, which lists the Lift and Block values.
- To select lift entry blocks interactively, select Pick and select blocks in the 3D window.
In the Dependencies group, optionally select a dependency table from the Dependency Table list.

Note: To create a new dependency table, select New.
In the Dump Dependency grid, define dependencies by setting Leader (first block in a dependency) and Follower (second block in a dependency).
- To add a dependency row, select Add and define a Leader and Follower.
- To automatically generate dependencies for the filtered blocks, select Auto.
- To define dependencies from a sequence indicator string, select From String, then select the required string or strings in the 3D window.
- To delete the selected dependency, select Remove.
- To delete all dependency entries, select Remove All.
In the Sequencer group, enter a value in EFH Factor.
To sequence the dump blocks using the parameters defined on this screen, select Sequence.
To animate the dump block sequence and display it in the VR window, select Start Animation.
Click OK.

Creating Dump Dependencies

You can create dependencies between dump blocks using the following procedure:

On the Dump Sequencing screen, in the Dependencies group, select Add.
Select the leader and the follower.
Select Auto.
Check that all overlapping blocks are automatically linked.

Note: You can also create dependency links from a simple string that passes through the required dump block outlines. The generated dependencies link the blocks in the same order as the string points.