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