Dependencies

To access this screen:

On the Scheduling Setup screen, select Constraints >> Dependencies.

Use the Dependencies screen to set dependencies between mining blocks and control loader movement in your schedule.

If there is a dependency between two blocks, the Leader must be consumed (to a defined percentage) before the Follower can be mined.

Dependencies can be added manually or generated automatically based on vertical geometry.

You can also generate dependencies using a dependency order string, which is a string object that connects the blocks you want to link.

Dependency Order Strings

Block dependencies can be automatically generated by creating a new string object that connects the Blocks that are to be linked. The string should be drawn in the plane of the Blocks and the Perimeter Selection Mode should be turned off when digitizing and using the string object.

When using the From String option to create dependencies, for best results, filter or clip down to the current mining level, then select the string. This avoids situations where the dependencies can jump between benches above or below, depending on the view in the 3D window

Activity Steps:

Display the Dependencies screen.
To filter the list, select values in Leader, Follower and Type.
To add a dependency manually, select Add, then set the Leader, Follower, Type and Percent values in the Dependencies grid.
- Leader – Block identifier (field BLOCKID from the block outlines object) for the leading block.
- Follower – Block identifier (field BLOCKID) for the follower block.
- Type – Select either Block or Blast. Do this once dependencies have been added to the list.
- Percent – Enter a value (%) for the proportion of the Leader block that must be mined before the Follower block is mined.
To generate dependencies using a dependency order string, create and digitise the string object in a 3D window.
When digitising the string, turn off Perimeter Selection Mode to avoid selecting block perimeters.
For best results, filter or clip down to the current mining level before you select the string, so dependencies do not jump between benches above or below.
On the Dependencies screen, select From String.
In the 3D window, select the dependency string.
On the Dependencies screen, review the added entries in the Dependencies grid.
In the 3D window, review the position (block centroid) and direction (arrows) of the generated dependencies.
To generate dependencies automatically, select Auto, then use the Auto Dependencies screen.
- To remove a dependency, select the dependency in the Dependencies grid, then select Remove.
- To remove all listed dependencies, select Remove All, noting that this only removes dependencies currently in view.
- To view the listed dependencies in the 3D window, select Visualize.
- To perform a consistency check, select Check.
  
  Note: This can take a while for complex data.