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How does a remotely operated continuous miner work in highwall mining?
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coal mining
Schematic diagram of an underground coal mine, showing surface facilities, access shafts, and room-and-pillar and longwall mining methods.
In highwall mining, a continuous miner is used to extract coal by creating an entry directly into the coal seam. Unlike traditional manual methods, this process is performed by a machine that is remotely operated from a cabin located at the surface.1
The operation functions as follows:
- Control: The operator uses a television camera to monitor and guide the machine's progress into the seam.1
- Extraction and Transport: As the machine cuts the coal, it is transported out of the entry via conveyors positioned behind the miner.1
- Advancement: The miner can advance between 300 and 400 metres into the seam. Once this distance is reached, the machine is retreated to the surface and repositioned to begin an adjacent entry.1
This method is an adaptation of auger mining and offers significant improvements in productivity, safety, and cost-efficiency.1