Abstract:To study the kinematic characteristics of Hetaoping landslide, we select Sentinel-1A ascending orbit data set (2019-02-26-2021-02-27), and use small baseline subsets InSAR (SBAS-InSAR) to obtain the time series deformation in the line of sight (LOS) direction. Combined with particle flow code, we predict the deformation and failure trend of the landslide and undertake on-site geological survey. According to the deformation rate and movement characteristics of the slope surface, we identify the depletion zone and sliding accumulation area of the landslide, and analyze the deformation trend, sliding mechanism and displacement change of the landslide, and discuss the main deformation causes of the landslide. The results show that SBAS-InSAR technology and PFC numerical simulation are in good agreement with the deformation signs and kinematic laws of Hetaoping landslide. Remote sensing technology combined with numerical simulation method has high applicability and reliability for landslide stability analysis in mountainous areas with complex geological conditions. It can be used as an important technical means and decision-making basis for disaster prevention and reduction.
WANG Andi,LI Longqi. Deformation and Failure Trend Analysis of Hetaoping Landslide in Maoxian County Using SBAS-InSAR and Particle Flow Code[J]. jgg, 2023, 43(7): 685-691.