Utilizing Interferometric Synthetic Aperture Radar and Ground-Based Radar Data to Predict Time to Failure and to Calibrate Numerical Models on an Opencast Coal Mine

DOI

10.2991/978-94-6463-258-3_20How to use a DOI?

Keywords

InSAR; Inverse Velocity; Finite Element Numerical Modelling

Abstract

Accurate time failure predictions and improved geotechnical certainty in an opencast mine will lead to tremendous safety and economic benefits. This study utilizes interferometric synthetic aperture radar and ground-based radar data to conduct a back analysis on slope failures that have occurred in an opencast coal mine in South Africa. Time to failure predictions was done utilizing the inverse velocity technique, while the effect of different data smoothing techniques on the accuracy of the failure predictions was evaluated. Additionally, ground-based radar data was used to calibrate a finite element numerical model to improve geotechnical certainty. Time to failure predictions based on satellite monitoring data was less accurate than predicted in the literature. This study confirms that displacement measurement from ground-based radars may be used to optimize the strength parameters of finite element numerical models. To improve the accuracy of time to failure predictions from satellite monitoring data, it was proposed that a satellite constellation with a shorter data acquisition time must be utilized. By having access to more frequent data acquisitions and by identifying the most active points within the failure zone of a slope, it is expected that the accuracy of the time to failure predictions can be improved.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Jacques Strydom
AU  - Ohveshlan Pillay
PY  - 2023
DA  - 2023/11/08
TI  - Utilizing Interferometric Synthetic Aperture Radar and Ground-Based Radar Data to Predict Time to Failure and to Calibrate Numerical Models on an Opencast Coal Mine
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 191
EP  - 198
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_20
DO  - 10.2991/978-94-6463-258-3_20
ID  - Strydom2023
ER  -