Study on Ground Deformation Influenced by Subway Construction and Operation using InSAR Technique

In order to reinforce the monitoring work of ground deformation around subway construction and operation which extremely affects the ground deformation and influences the surrounding environment, even that causes accidents, the interferometric synthetic aperture radar (InSAR) technique which are always deal with the massive data in the area of land deformation were used to analyze the high-resolution COSMO-SkyMed Himage images acquired from February 2013 to September 2018 around subway line in Hefei city. The results and conclusions indicate that subway construction and operation in Hefei obviously influenced ground settlement and deformation, especially for the areas around line 4, intersections of line 1 with line 4 and line 5, and the interchange station of line 1 and line 2. Therefore, it is necessary to strengthen the prevention and management work of regional geological disasters.