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New Kaiser Wilhelm Tunnel

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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