ABSTRACT
One of the challenges in urban tunneling projects is to guarantee that the infrastructure assets crossing or adjacent to the tunnel alignment and other new build elements are not affected by the construction activity.
Radar Satellite Interferometry (InSAR) is a non-invasive surveying technique which provides millimetric deformation measurements of terrain structures over wide areas without any need to access site. This technique allows a comprehensive and periodic vision, with the same accuracy as manual levelling in cities for a fraction of the cost of traditional systems.
ATLAS is the Sixense’s InSAR processing chain, aimed to monitor the different tunneling activities phases: access shaft excavation, tunnel construction and settlement. In this paper, various successful monitoring site examples related to different tunneling work phases will be shown.
