Tunnel Ovalisation Monitoring

This research project (2007 - 2014) answered the question how laser scanning, as a typical example of innovative 3D measurement techniques, can be used to contribute to tunnel ovalisation monitoring. A measurement and point cloud processing methodology has been developed resulting in achievable standard deviations up to 0.27 mm, depending on the used type of laser scanner and applied smoothing level. Moreover, it has been demonstrated that monitoring with laser scanning offers new insights in the deformation pattern of tunnels, besides the more established monitoring techniques. It is also proven that the detailed and accurate 3D point clouds can be used for an even more advanced segment wise monitoring.



Research units



Staff members