Conveyor Push Distance Behind Advanced Shields

The picture below shows that the shearer has just left the HG Cleanup Area as it cuts towards the tailgate and SRB has triggered the headgate shields to advance.

Bidirectional Cutting Cycle – Step 1 – Leaving HG

Once the shearer has moved far enough and enough shields have advanced, the conveyor push will begin following.

Parameter “Push dist behind prime”

In the picture below, the shearer is in mid-face, the shields behind the shearer have advanced, and the conveyor push is following.

Bidirectional Cutting Cycle – Step 2 – Cutting to Tail

The picture below shows the longwall state when the shearer reaches the tailgate.

Bidirectional Cutting Cycle – Step 3 – Shearer in TG