Inside the 'beast' tunnelling under Sydney Harbour: 'Every millimetre counts'
'Every millimetre counts': Inside the beast tunnelling under Sydney Harbour
A 137-metre-long tunnel boring machine named Barangaroo is carving a road tunnel beneath Sydney's inner west and harbour, with a crew of 20 working in cramped, noisy, submarine-like conditions. Pilot Andrew Jones keeps the machine on course within five millimetres, installing concrete rings to line the tunnel as it goes.
Every millimetre counts.
- brudgers
- butvacuum
I'd never thought about it till a knee jerk scoffing at the title:
But do they need the TBM to be milimeter accurate the whole way- or do they just need mm accurate surveying and very high accuracy when merging the tunnels?
It might seem inane- but they're two VERY different things.
- cube00
Interesting to a see a Windows 7 machine in the picture captioned "Andrew Jones in the boring machine’s control room."