Monitoring Slope Displacements of Muyubao Landslide Using InSAR Analysis Technique

WANG Shang-xiao; LI Shi-yao; NIU Rui-qing

doi:10.11988/ckyyb.20201237

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Journal of Changjiang River Scientific Research Institute ›› 2022, Vol. 39 ›› Issue (4) : 77-84. DOI: 10.11988/ckyyb.20201237

ENGINEERING SAFETY AND DISASTER PREVENTION

Monitoring Slope Displacements of Muyubao Landslide Using InSAR Analysis Technique

WANG Shang-xiao¹, LI Shi-yao², NIU Rui-qing²

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Abstract

The Three Gorges Reservoir area has been suffering from striking landslid disasters due to complex geological conditions and numerous slope problems, posing daily monitoring requirements. Conventional monitoring not only costs large amounts of manpower and material resources, and also is prone to be limited by external conditions. In the present research, 22 views of ALOS-2 satellite data from August 2016 to October 2017 of the Yangtze River bank in Badong County as the research area were processed using PS InSAR (permanent scatterer interferometry) technology to obtain accurate regional surface deformation results. In association with hydrology, geology and field investigation, the deformation characteristics such as sliding rate and scale of Muyubao landslide were analyzed. Results manifested that in the monitoring period, the Muyubao landslide was in a slow creep deformation stage, with an average deformation rate of 10.4 mm/a. Water level fluctuation was the major influential factor of landslide deformation.

Key words

landslide / time series InSAR / deformation monitoring / ALOS-2 data / Three Gorges Reservoir area

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WANG Shang-xiao, LI Shi-yao, NIU Rui-qing. Monitoring Slope Displacements of Muyubao Landslide Using InSAR Analysis Technique[J]. Journal of Changjiang River Scientific Research Institute. 2022, 39(4): 77-84 https://doi.org/10.11988/ckyyb.20201237

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