3D Reclaimers

CHASM supports several different reclaiming methods, which correspond to the more common types of physical reclaimers in use at various bulk material handling operations.

Bridge

The full width of the stockpile is reclaimed from the base upwards, along the Y-axis.

Boom

A rotating bucket wheel on the end of an arm that swings in an arc reclaims the stockpile in flat 'benches'.

Tunnel

Gates in the base of the stockpile can be selectively opened and closed to reclaim material directly above them.

Front-end Loader

A general-purpose reclaiming mode which uses a quadrilateral shape to describe the four corners of the base.

When using a front-end loader to reclaim material, the four corners must:

• Form a convex polygon (example below)
• Not be co-incident (that is, no two points can have the same co-ordinates)
• Be sorted in a certain order (to form the polygon)
• Be co-planar (that is, the four points must lie on the same plane)

The diagram on the left below is a convex polygon. The diagram on the right below is a concave polygon.