Research on Ground Subsidence Development Characteristics of Maliupu Pyrite Mine Area in Lueyang County Based on SBAS InSAR Technology

In order to investigate the development of ground subsidence in the Maliupu pyrite mining area, analyze the characteristics of ground subsidence deformation, and provide basic data for ecological environment restoration and national spatial planning in the mining area. Using SBAS InSAR technology, the surface deformation rate of Sentinel-1A in the mining area in the past two years was analyzed based on the acquisition of 61 scenic data and data preprocessing from 2020to 2022 in the area. The results show that the deformation rate in the central region of the mining area is relatively low, with LOS deformation rate（vel） mainly concentrated in-5～10mm/a, slope deformation rate（Vslope） concentrated in-10～0mm/a, high deformation area located at the top and middle and lower parts of the slope, and maximum slope deformation rate of-49mm/a. On site verification found that SBAS InSAR technology can provide more accurate data to support the development of ground subsidence in the mining area.