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The deformation characteristics analyses of reactivate water-rich landslide based on DS-InSAR monitoring technology

Author

Listed:
  • Yongwei Huang

    (China Railway Southwest Research Institute Co., Ltd)

  • Xianchun Ma

    (China Railway Southwest Research Institute Co., Ltd)

  • Qiang Li

    (China Railway Southwest Research Institute Co., Ltd)

  • Ming Chang

    (Chengdu University of Technology)

  • Shibo Huang

    (Chengdu University of Technology)

  • Lingjie Lu

    (Chengdu University of Technology)

Abstract

To investigate the deformation patterns and mechanisms of water-rich accumulation landslides under the heavy rainfall conditions, the Distributed Scatterer Interferometric Synthetic Aperture Radar (DS-InSAR) monitoring technology was employed to monitor the surface deformation of a water-rich accumulation landslide on a highway in Qinba Mountain area from April 2023 to April 2024. The four characteristic points in the landslide area were selected for InSAR deformation analyses, and the results were compared and analyzed comprehensively with Global Navigation Satellite System (GNSS) surface monitoring and deep displacement monitoring datas. The results indicate that the ancient landslide accumulation body exhibited clear zoning characteristics, with the primary deformation areas concentrated on the right side below the highway. Accelerated deformation of the landslide occurred between August 17 and October 17, 2023, which was strongly correlated with the rainfall conditions. The reactivation of the landslide was attributed to the loose ancient landslide deposits, abundant groundwater, and the direct impact of the heavy rainfal. The ground monitoring datas validated the effectiveness of DS-InSAR monitoring technology in tracking deformation of highway accumulation landslides. The results provided data supports and theoretical references for comprehensive monitoring, feature analysis, and triggering factors assessment of water-rich highway accumulation landslides.

Suggested Citation

  • Yongwei Huang & Xianchun Ma & Qiang Li & Ming Chang & Shibo Huang & Lingjie Lu, 2025. "The deformation characteristics analyses of reactivate water-rich landslide based on DS-InSAR monitoring technology," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 121(17), pages 20129-20146, October.
    • Handle: RePEc:spr:nathaz:v:121:y:2025:i:17:d:10.1007_s11069-025-07614-4
    DOI: 10.1007/s11069-025-07614-4
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