Assessing the Truckless Conveying Option in Mines

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DÜPERTHAL Sicherheitstechnik GmbH & Co. KG

All components of the system need to be designed for ease of relocation – together (Fig. 9). A fully mobile component in one area is of reduced benefit if the drive head requires partial dismantling to be moved or if a bridge conveyor does not fit well over the tail end of the face conveyor.

Normally fixed items such as feed chutes or restraining structures need to be designed for regular and simple movement, such as the driven hopper car or tail end designed to be picked up by a mobile transporter shown here. Most systems relocate the conveyor by gradual pulling sideways of the conveyor modules. This is achieved by devices attached to dozers or pipe-layers that drive parallel to the conveyor and pull it over in increments of around half a metre at a time (Fig. 9).

Lets Roll – How to Relocate your Conveyor

Relocations will take place over an excavated bench. Depending on material and local conditions, the terrain can be boggy or uneven. Particularly uneven conditions have driven operations to abandon the gradual shifting approach, dismantle the conveyor and move it to the new alignment in pieces. While obviously time and effort intensive, if the conditions will require this then it needs to be factored into operating cost estimates.

Further sites have almost removed the need to relocate in this manner. A separate line of conveyor modules is installed in the new alignment so only the conveyor head and tail structures need to be moved at the required time. The belt is cut and wound off the old alignment and reeled directly to the new alignment via guide rollers. This requires spares holdings for the extra modules and involves a belt splice but reduces time required for relocation and the impact of ground conditions.

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