Satellite Imaging Techniques for Ground Movement Monitoring of a Deep Pipeline Trench Backfilled with Recycled Materials

The damage to pipeline infrastructures caused by reactive soils has been a critical challenge for asset owners. Sustainable backfilling materials have recently gained interest stabilize highly zones as pre-emptive approach towards sustainability. In this study, two adjacent sections of sewer trench in Melbourne, Australia were backfilled with blends 100% recycled aggregates. sites monitored ground deformations during October 2020–February 2022 (17 months) using surveying techniques. Interferometric synthetic aperture radar (InSAR) techniques and algorithms also employed estimate the movements surrounding regions. cross-validation deformation results achieved from both enabled an in-depth analysis effectiveness aggregates address soil issues urban developments. Observational data their spatiotemporal variation field satisfactorily captured InSAR techniques: differential (DInSAR), persistent scatterer interferometry (PSI), small baseline subset (SBAS). SBAS estimations found be closest measurements, primarily due without well-defined geometries. This study’s contribution existing knowledge defines influence sustainable backfill areas through satellite imaging. relationship between actual behavior can growing construction that may challenging perform monitoring resource constraints.