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Are there any mines where machines/vehicles are powered by e.g. overhead cables? Seems like that might in some cases be cheaper to pull off than equipping huge

Are there any mines where machines/vehicles are powered by e.g. overhead cables? Seems like that might in some cases be cheaper to pull off than equipping huge vehicles that go up and down the same path over and over again with huge batteries.

lallysingh 7y ago
Depends on what you're moving, I suppose. Some materials may have gasses that don't like sparks.
Reason077 7y ago
Unless your vehicles are operating a very consistent route that rarely or never changes, it's likely to be cheaper to go with batteries than to build and maintain a network of overhead wires.
bryanlarsen 7y ago
The article mentions that pantographs are unusable due to the number of exposed moving parts and the existence of conductive dust.
- londons_explore 7y ago
  Conductive dust is evil. Even your phone will likley stop working if you get conductive dust into it. It's as bad as water, except gravity doesn't keep it pooled on the floor.
- qiqitori 7y ago
  I searched a bit and found that "Trolley Assist" apparently refers to a system where large diesel-electric mining trucks use overhead lines for part of their journey. (You can do an image search for "trolley assist" and find examples.) I guess this is the kind of thing I was looking for.
ajpgrealish 7y ago
There is an example of this at the Lumawan Copper Mine in Zambia. It's trucks are powered by overhead cables and electric motors whilst driving up the fixed ramps, It then switches to diesel when moving around away from the ramp. What is really interesting is that this not only reduces fuel use but allows them to move up the ramps much more quickly and improves productivity of the mine.
dghughes 7y ago
I don't think that would be suitable in an underground mine due to the risk of sparks igniting flammable gases. But for open pit mines it would be OK.
pixl97 7y ago
Kind of but not exactly. The electric shovels are actually plugged in with large electrical cables that are routed around the dig site with tractors. Trucks themselves wouldn't really work too well with overhead methods though.

lallysingh 7y ago

Depends on what you're moving, I suppose. Some materials may have gasses that don't like sparks.

Reason077 7y ago

Unless your vehicles are operating a very consistent route that rarely or never changes, it's likely to be cheaper to go with batteries than to build and maintain a network of overhead wires.

bryanlarsen 7y ago

The article mentions that pantographs are unusable due to the number of exposed moving parts and the existence of conductive dust.

londons_explore 7y ago
Conductive dust is evil. Even your phone will likley stop working if you get conductive dust into it. It's as bad as water, except gravity doesn't keep it pooled on the floor.
qiqitori 7y ago
I searched a bit and found that "Trolley Assist" apparently refers to a system where large diesel-electric mining trucks use overhead lines for part of their journey. (You can do an image search for "trolley assist" and find examples.) I guess this is the kind of thing I was looking for.

ajpgrealish 7y ago

There is an example of this at the Lumawan Copper Mine in Zambia. It's trucks are powered by overhead cables and electric motors whilst driving up the fixed ramps, It then switches to diesel when moving around away from the ramp. What is really interesting is that this not only reduces fuel use but allows them to move up the ramps much more quickly and improves productivity of the mine.

dghughes 7y ago

I don't think that would be suitable in an underground mine due to the risk of sparks igniting flammable gases. But for open pit mines it would be OK.

pixl97 7y ago

Kind of but not exactly. The electric shovels are actually plugged in with large electrical cables that are routed around the dig site with tractors. Trucks themselves wouldn't really work too well with overhead methods though.