Abstract：Based on 49 Sentinel-1 images, we combine SBAS-InSAR and CR-InSAR to monitor the deformation of Ankang airport with expansive soil for two years. The results show that there are three obvious unstable slope areas, which are highly coincident with the airport filled areas. The unstable slope is far away from satellite along the line of sight. The deformation range in space is from point to surface, and the deformation rate in time is gradually slowing down. Combined with the rainfall data, we find that the deformation rate of expansive soil slope slow down obviously in the summer rainfall period, and even uplift. Comprehensive analysis shows that the special deformation of airport slope area is closely related to expansive soil used in the construction, and the deformation of Ankang airport is still continuing.
REN Zhipeng,ZHANG Shuangcheng,SI Jinzhao et al. Deformation Interpretation of Expansive Soil by Combining SBAS-InSAR and CR-InSAR at Ankang Airport[J]. jgg, 2023, 43(11): 1112-1116.
