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  Using Cameras in TBM Cutterheads for Geological Documentation of the Tunnel Face

  The contribution presents a camera system for the geological documentation in mechanized tunneling that can be applied in TBM maintenance phases. The camera system is developed in the current R&D project TBMonitor and field-tested in a hard rock TBM drive of the Brenner Base Tunnel constructed by the ARGE Tulfes Pfons, a bidding consortium of Strabag AG and Salini Impregilo S.p.A. It provides high resolution images and color-coded relief presentations of the entire face. Its design, components, installation, highly automized photogrammetric workflow, geological utilization and the experiences of a year of using it in a running tunnel project are Discussed.

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