Abstract:
In view of the characteristics of mining subsidence with large amplitude and small scope, a method of mining subsidence monitoring by combining multi-look with full-resolution interferogram is put forward. Firstly, Jining Mining Area is selected as the research object and two high resolution TerraSAR-X images are obtained. Next, the subsidence of Jining Mining Area from February 17, 2017 to March 11, 2017 was obtained respectively by multi-look and full-resolution interferogram method. The results obtained by the two methods are fused, i.e., the multi-look method is used to monitor the small subsidence at the edge of the sinking basin and the full-resolution method is adopted to monitor the large gradient deformation at the center of the sinking basin. The results show that the maximum subsidence of Jining Mining Area occurs in Xinyi Coal Mine, the maximum subsidence amount is -74 mm and the maximum subsidence rate is -3.36 mm/d.