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ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Geohazards and Georisks
Volume 12 - 2024 |
doi: 10.3389/feart.2024.1531445
This article is part of the Research Topic Monitoring, Early Warning and Mitigation of Natural and Engineered Slopes – Volume IV View all 28 articles
Assessing Highway Slope Stability Risks Using InSAR: a Case Study in Bijie, China
Provisionally accepted
Liyuan Duan
1
Hwee San Lim
1*
Sya'rawi Muhammad Husni Mohd Sharoni
1*
xuejun tian
2*
Meili Chen
3*
Nana Han
4*- 1 Universiti Sains Malaysia, school of physics, Penang, Malaysia
- 2 Guizhou transportation planning survey & design academe CO.LTD, guiyang, China
- 3 School of Humanities, Universiti Sains Malaysia, Pulau Pinang, Malaysia
- 4 Universiti Sains Malaysia Engineering Campus, Nibong Tebal, Malaysia
China's road network has played an important role in promoting economic development. Once these roads are put into use, it is vital to regularly monitor the deformation of road slopes and the surrounding areas that affect road stability to prevent catastrophic incidents. This paper utilizes differential interferometric synthetic aperture radar (DInSAR) and Time Series InSAR (TS-InSAR) techniques to detect the deformation of road network slopes in Bijie City, Guizhou Province, China, during the period from March 2020 to November 2021. A total of 52 deformation points were identified using 107 C-band Sentinel-1A images and 4 L-band ALOS-2 images. After excluding 21 deformation points that are far from the highway and pose no threat to highway safety, geological professionals conducted field verification on the results of the remaining 31 deformation points. They identified and corrected any omissions in the data collection process, tested the consistency of the InSAR solution, and verified the existence of 26 potential highway geological hazard points. The application of InSAR deformation monitoring technology has proven valuable for geological hazard investigations along highways, reducing the need for manpower and financial resources associated with manual inspections of non-target areas. Furthermore, it greatly enhances the accuracy and efficiency of geological hazards detection. However, it should be noted that InSAR detection technology cannot completely replace traditional highway slope hazard monitoring due to limitations in radar resolution and timeliness. Therefore, it is necessary to complement InSAR with other monitoring methods to ensure comprehensive and reliable monitoring of highway slope stability.
Keywords: Highway slope, Deformation monitoring, DInSAR, TS-InSAR, Field verification
Received: 27 Nov 2024; Accepted: 23 Dec 2024.
Copyright: © 2024 Duan, Lim, Sharoni, tian, Chen and Han. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Hwee San Lim, Universiti Sains Malaysia, school of physics, Penang, Malaysia
Sya'rawi Muhammad Husni Mohd Sharoni, Universiti Sains Malaysia, school of physics, Penang, Malaysia
xuejun tian, Guizhou transportation planning survey & design academe CO.LTD, guiyang, China
Meili Chen, School of Humanities, Universiti Sains Malaysia, Pulau Pinang, 11800, Malaysia
Nana Han, Universiti Sains Malaysia Engineering Campus, Nibong Tebal, 14300, Malaysia
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