Uetliberg Tunnel: Comparison between Mechanized Tunnelling and Drill and Blas

The lecture introduces the Uetliberg tunnel project. Especially it will focus on the experience with the tunnel bore extender using the undercutting technique as well as the comparison between this mechanized tunnelling and drill and blast excavation. The content of the lecture is as follows: 1. Project description and overview 2. Boring operations with TBM and TBE 3. Comparison of mechanized and drill and blast heading 4. Summary / conclusion

Keywords:

Uetliberg tunnel , tunnel bore extender machine , Drill and Blast