High pressure water jetting continues to be used to remove rock impinging on the shield of Snowy 2.0 tunnel boring machine (TBM) Florence at Tantangara.
The TBM was halted by the project team in extremely hard and abrasive rock conditions on 16 May, with specialist contractors commencing on 21 May.
The high pressure water jetting technique to remove the rock is ongoing and working well.
We expect highly variable ground conditions to continue ahead of TBM Florence in the headrace tunnel.
