Application of SBAS-INSAR technology in surface subsidence monitoring in Yanghuopan mining area

With the underground mining in Yanghuopan mining area, the original stress balance state in the rock mass is broken, causing the rock strata and even the ground surface around the goaf to move and deform, resulting in land subsidence and deformation and damage of surface buildings, affecting industrial and agricultural construction and people's living environment. The application of small baseline Radar Interferometry Technology in land subsidence monitoring provides a new means for the monitoring and analysis of land subsidence in Yanghuopan mining area. In this manuscript, SBAS-INSAR technology is used to monitor the land subsidence caused by underground mining in Yanghuopan mining area. Based on 33 sentinel-1A images from June 2019 to August 2020, the surface deformation center, deformation rate, cumulative deformation variables and other information of Yanghuopan coal mine were obtained, and the surface deformation of the mining area was interpreted and analyzed. The main settlement area of the mining area is located in the east of the mining area. The maximum settlement rate in the mining area is -96mm/y, and the maximum cumulative deformation is -119mm.