Abstract：Using StaMPS technology, based on the images of 133 ascending orbit and 95 descending orbit covering Beijing capital international airport from 2017 to 2021, we research the ground subsidence around the airport and the stability of cracks in the interior of the site. The results show that the image monitoring results of ascending and descending orbit are in good agreement. A subsidence funnel is formed in the south of the airport and the south of the Wenyu river. The maximum deformation rate inside the funnel is over 40 mm/a, and the subsidence funnel is distributed along the Wenyu river. We verify the internal coincidence accuracy of the monitoring results of the ascending and descending orbit images. The results show that the deformation rate difference of more than 90% common pixels is between ±10 mm/a, which proves the consistency of the monitoring results of the images. The time series deformation results of feature points show that the subsidence near Jinzhan township, Fuhao village and Huangjinhuayuan community is serious, and the maximum cumulative shape variables exceed 250 mm, 150 mm and 110 mm, respectively. It can be seen from the overall deformation results of the airport and the time series and profile results on both sides of the ground fractures that the difference deformation of the surface on both sides of the ground fractures is significantly compared, and the boundary of the deformation difference is more consistent with the location of the ground fissures.
HOU Zuhang,YANG Chengsheng,LEI Rui et al. InSAR Time Series Deformation Monitoring around Beijing Capital International Airport and Ground Fissure in the Airport[J]. jgg, 2024, 44(6): 636-642.
