Journal
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
Volume 110, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tust.2020.103745
Keywords
Ground deformations; InSAR; Long time series; Monitoring; Settlements; Tunnelling
Ask authors/readers for more resources
This study investigates the use of satellite InSAR for evaluating surface settlements during shield tunnelling in soft soil areas. Special emphasis is placed on phase ambiguities and the application of InSAR before, during, and after tunnel construction. Results show that InSAR is a valuable source of information for monitoring settlement patterns.
In this work, we investigate if, when, and how satellite InSAR can be used for evaluating surface settlements that occur during shield tunnelling in soft soil areas. We evaluate the applicability of InSAR prior, during, and after tunnel construction. Special emphasis is placed on the influence of the InSAR phase ambiguities in relation to short-term settlements that may occur during tunnel construction. We demonstrate that a rough analytic settlement prediction can be sufficient to resolve the most probable phase ambiguity level, leading to an augmented implementation of InSAR. We use the shield tunnel of the in North/South Metro Line Amsterdam as a case study, where surface levelling data is available to assess and validate the results. We conclude that InSAR is a valuable complementary source of information as it provides data outside the area of the conventional surveying benchmarks and it reveals relevant information about settlement patterns before and after traditional construction monitoring periods.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available