PS. Simple Dependencies Walkthrough

Owned by iarmstrong
Dec 22, 2021
3 min read

A step by step walkthrough of dependencies for a single mining solid through a drill, blast, mine life-cycle.

In this example all Expand Distances have been set to -1.

Stage 1. Mining solid at the beginning of a sequence

Dependencies show:

  1. Mining is waiting for “PreDigSolid” to be ready.

  2. “PreDigSolid” is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • “PreBlastSolid” which is Satisfied as all activities before drilling have been completed.

    • Charging which is Not Satisfied.

  4. Charging is waiting on Drilling which is Available.

Mining solid at the beginning of a sequence

Stage 2. Drilling Commences

Dependencies show:

  1. Mining is waiting for “PreDigSolid” to be ready.

  2. “PreDigSolid” is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • “PreBlastSolid” which is Satisfied as all activities before drilling have been completed.

    • Charging which is Not Satisfied.

  4. Charging is waiting on Drilling which is Available.

Solid when drilling commences

Stage 3. Drilling Completed

Dependencies show:

  1. Mining is waiting for “PreDigSolid” to be ready.

  2. “PreDigSolid” is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • “PreBlastSolid” which is Satisfied as all activities before drilling have been completed.

    • Charging which is Not Satisfied.

  4. Charging is waiting on Drilling. This time delay was setup in Setup tab > Dependencies > Activity Sequences step.

Stage 4. Charging Commences

Dependencies show:

  1. Mining is waiting for “PreDigSolid” to be ready.

  2. “PreDigSolid” is waiting on Blasting.

  3. Blasting has 2 predecessors:

    • “PreBlastSolid” which is Satisfied as all activities before drilling have been completed.

    • Charging which is now Available.

Stage 5. Charging Completed

Dependencies show:

  1. Mining is waiting for “PreDigSolid” to be ready.

  2. “PreDigSolid” is waiting on Blasting which is now Available and waiting on a Blast Window.

Stage 6. Blasting

Dependencies show:

  1. Mining is waiting for “PreDigSolid” to be ready.

  2. “PreDigSolid” is waiting on Blasting which is happening.

Stage 7. Mining Commences

Dependencies show:

  1. Mining is underway on top flitch.