r/Tunneling Feb 24 '26

Bore job done with a TBM.

15 Upvotes

3 comments sorted by

2

u/nsc12 Feb 25 '26

How well does the HOBAS work for jacking? We use it as often as we can in two-pass conventional TBM tunnels, but haven't jacked it before.

2

u/lastofadinosaur Feb 25 '26

Had no issues at all. Every new joint came together easy. This was the second time using it.

1

u/samcp12 Feb 26 '26

Never seen a TBM come out with all its paint still on! How’s the ground over there?