New Paradigm in Geotechnical Performance Monitoring Using Remote Sensing: Fid-Bau Portal

New Paradigm in Geotechnical Performance Monitoring Using Remote Sensing

Oommen, Thomas / Bouali, El Hachemi / Wolf, Rudiger Escobar

Abstract The geotechnical engineer designs with a wide variety of naturally occurring heterogeneous materials where the exact numerical values of their engineering properties cannot be assigned. Therefore, performance monitoring during and after construction is critical to evaluate the design judgments and, if necessary, update them. Moreover, the urbanization has led to the development of areas that were previously considered geologically unstable, and this in light of the changes in weather patterns mandates improved monitoring. Traditionally, geotechnical performance monitoring is done by lateral ground displacement and vertical settlement measurements using instrumentation. However, the reliability of the monitoring is influenced by the extent to which measurements vary locally within the instrument zone. In highly variable geologic conditions, a large number of measurement points may be required for reliable monitoring. The advancements in the spatial and temporal resolution of satellite-based remote sensing using Synthetic Aperture Radar (SAR) and optical provide a new paradigm for geotechnical performance monitoring in highly variable geologic conditions. Also, manned and unmanned aerial platforms offer an opportunity to acquire remote sensing data as the user requires. These remote sensing techniques provide an excellent opportunity for engineers to monitor the performance of geotechnical structures in complex geologic conditions.