3 ms·
This is not correct. Most TBMs are advanced into a receiving pit or shaft, disassembled, and moved. Leaving tons of steel in the ground is not cost effective
by abduhl 10y ago
This is not correct. Most TBMs are advanced into a receiving pit or shaft, disassembled, and moved. Leaving tons of steel in the ground is not cost effective unless schedule is your main driver.
- nradov 10y agoThanks for the correction. I know there have been tunnels where TBMs were left behind but apparently that's less common than retrieval. http://www.nysun.com/new-york/after-work-done-drills-likely-will-be-buried/46894/ http://www.nysun.com/new-york/after-work-done-drills-likely-... http://www.madehow.com/Volume-6/Tunnel.html http://www.madehow.com/Volume-6/Tunnel.html