SkyGeo technical paper cover with a railway track and tunnel, focused on using InSAR to monitor tunnelling works and railway infrastructure stability.

Temporal and spatial relationships between the ground displacements and dewatering activities during tunneling in Frankfurt am Main

Technical Paper

This paper presents the results of a Sentinel-1 InSAR analysis of ground displacements during the construction of a subway tunnel in Frankfurt am Main, focusing on the temporal and spatial relationship between displacements and dewatering activities.

 

  • Discover how Sentinel-1 InSAR data offers valuable, compatible insights that enhance and validate traditional ground-based monitoring for tunnel construction projects.

  • Gain an understanding that the cumulative settlement in Frankfurt clay during dewatering may be less than 80% (often 70%) in the first six months, contradicting some earlier empirical studies.

  • See how InSAR displacement estimates often report higher settlements than ground-based leveling methods, potentially due to the different reference networks used in field studies.

  • Learn about the critical role of geological features, such as a fault controlling the groundwater table, in limiting and distributing the ground displacements caused by dewatering.

  • Understand that InSAR is a powerful tool for identifying geological hazards, locating potential weaknesses in ground-based monitoring, and improving subsurface displacement modeling.