Loading…

Augmented satellite InSAR for assessing short-term and long-term surface deformation due to shield tunnelling

•Generic applicability assessment of InSAR for shield tunnelling.•Use of the North/South Metro Line in Amsterdam as a case.•Evaluation of InSAR and conventional surface levelling measurements.•Introduction of an augmented implementation of InSAR.•InSAR as complementary monitoring tool to detect long...

Full description

Saved in:
Bibliographic Details
Published in:Tunnelling and underground space technology 2021-04, Vol.110, p.103745, Article 103745
Main Authors: Reinders, Kristina J., Hanssen, Ramon F., van Leijen, Freek J., Korff, Mandy
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Generic applicability assessment of InSAR for shield tunnelling.•Use of the North/South Metro Line in Amsterdam as a case.•Evaluation of InSAR and conventional surface levelling measurements.•Introduction of an augmented implementation of InSAR.•InSAR as complementary monitoring tool to detect long-term surface deformation. 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.
ISSN:0886-7798
1878-4364
DOI:10.1016/j.tust.2020.103745