Application of high-resolution InSAR technique in monitoring deformations in the Beijing Daxing International Airport
ZHAO Xia1,2(), MA Xinyan1,2(), YU Qian1,2, WANG Zhaobing1,2
1. China Airport Planning & Design Institute Co., Ltd., Beijing 100029, China 2. Observation and Research Base of Transport Industray of Airport Engineering Safety and Long-term Performance, Beijing 100029, China
The Beijing Daxing International Airport, located in the Yufa—Lixian area of Daxing District, is one of Beijing’s five major land subsidence areas. Differential deformations pose risks to the airport’s safe and stable operation. By applying the time-series interferometric synthetic aperture Radar (InSAR) technique, this study obtained the spatio-temporal characteristics of the airport’s deformations from 39 scenes of high-resolution COSMO-SkyMed (CSK) SAR images taken from September 2019 to November 2021. The monitoring results, with high accuracy, are roughly consistent with level monitoring results. Findings indicate that the airport’s subsidence lasted from 2019 to 2021, with the highest subsidence rate measured at -47.5 mm/a and a maximum cumulative subsidence amount of -103.84 mm. Notably, all four runways exhibited varying degrees of differential subsidence. Furthermore, this study delved into the spatio-temporal characteristics of deformations in the runways, as well as deformations in other high-deformation zones such as terminal buildings, maintenance aprons, oil tank areas, and the business jet apron. By combining the foundation treatment, this study analyzed the factors influencing the airport’s subsidence, providing a reference for the airport’s safe and stable operation.
赵霞, 马新岩, 余虔, 王招冰. 高分辨率InSAR技术在北京大兴国际机场形变监测中的应用[J]. 自然资源遥感, 2024, 36(1): 49-57.
ZHAO Xia, MA Xinyan, YU Qian, WANG Zhaobing. Application of high-resolution InSAR technique in monitoring deformations in the Beijing Daxing International Airport. Remote Sensing for Natural Resources, 2024, 36(1): 49-57.
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