| Owner : | Deutsche Bahn Netz AG |
| General contractor : | Alpine |
| Consultant : | ILF |
| Application : | Face stabilisation TBM exit portal |
| FiReP Solution : | temporary rockbolting |
| Construction date : | 2011-2012 |
| Products : | K60-32 GRP Powerthread® solid rock bolt L = 10.0m |
| General information : | In the area of critical ground conditions above the tunnel portal and in the tunnel face 10.0m long FiReP® GRP Powerthread solid bolts were installed. Due to the very good cuttablility properties of the FiReP® GFRP the TBM can easily cut through this last with GRP bolts reinforced rock section. High working loads on anchor head (>500 kN) are achieved by installing two steel nuts in a row. |
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