3 ms·
Mining guy here. It 95% cost. TBM is great if you have money and are going through residential type areas, can get through most rock, not as nimble though. Dri
by rmm 9y ago
Mining guy here. It 95% cost. TBM is great if you have money and are going through residential type areas, can get through most rock, not as nimble though.
Drill and blast are the most common by far, especially in mining industry where they are lots of twists and turns, and no-one cares about noise etc.
- cm2187 9y agoBut wasn’t the channel tunnel bored? Surelery they weren’t worried about noise.
- WhompingWindows 9y agoThe article in question answers both your concerns. 1) They used detonations 2) They installed noise-insulating windows on local buildings.
- pjc50 9y agoChannel tunnel was extremely soft and in places wet ground, mostly chalk. Comparatively quick to bore through. Blasting would have either wrecked the ground structure in too large an area or gone "splat" instead of "bang".
- kerryfalk 9y agoAlso, Sandvik, Copco or Volvo don't produce a TBM.
- rmm 9y agoThis x 10.