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3d Tunnel Inspection With Photogrammetric And Hybrid Systems, Michael Mett, Heiner Kontrus, Nina Müller, Stefan Eder
3d Tunnel Inspection With Photogrammetric And Hybrid Systems, Michael Mett, Heiner Kontrus, Nina Müller, Stefan Eder
Shotcrete for Underground Support XIV
The trend in tunnel assessment is towards comprehensive 3D measurement, either based on high quality digital imagery (photogrammetric systems) or the combination of laser and photo systems (hybrid systems). With digital 3D data, quantification and categorization of damage to the tunnel surface as well as the determination of thickness or volumes of layers (e.g. shotcrete) can performed in a comprehensive, fast and economic way.
The faster such tunnel assessment can be executed on site, the lower are the tunnel block times and environmental impairments related to the building measures. The costs for the operating companies can be significantly reduced as …