Xiamen New Airport Reclamation Area Settlement Monitoring Based on Remote Sensing InSAR and Other Multi-source Data
In order to analyse the land subsidence in the reclamation area of Xiamen New Airport, we collected 48 TerraSAR-X high-resolution radar images from January 2019 to December 2021. InSAR sequence analysis technology was used to obtain the settlement field caused by consolidation and compression of soft soil in the reclamation area. The deformation characteristics and causes of the sites with different reclamation times are discussed, and the monitoring results of InSAR angle reflector are compared with the leveling results of the same period by GNSS Beidou positioning analysis point. The results show that the whole area is stable during the monito-ring period, and the settlement is basically in the range of -3—3 mm and tends to be stable. There is obvious settlement in some are-as of sand-filled area. The maximum accumulated settlement in the main settlement area is -401.3 mm, and the maximum settlement rate is -10.0 mm/month. There is a high positive correlation between the site settlement and the thickness of silt. At the same time, the InSAR angle reflector has a good consistency with the leveling data, which further verifies the applicability of PS-InSAR technolo-gy in the settlement monitoring of the reclamation area, and can provide a scientific basis for the foundation treatment and settlement disaster prevention of the airfield.
land reclamationairportremote sensing InSARmulti-source monitoring dataground subsidence
万方数据
维普
