SURFACE DEFORMATION MONITORING OF XIAOLONGTAN OPEN-PIT MINE BASED ON SBAS-INSAR TECHNOLOGY
Taking the geological hazards caused by surface deformation caused by open-pit coal mining in Xiaolongtan,Yunnan as an example,the demonstration research on deformation and geological hazard monitoring in the mining area were carried out.The 21 Sentinel-1A remote sensing images from April 2023 to December 2023 were processed by using SBAS-InSAR technology.The results show that the deformation of the southeast side of the open pit and the central south area of Beipingba dump is obvious.The deformation rates of monitoring sampling points D12,E1 and IE2 are-43.57 mm/a,-159.07 mm/a,and-166.49 mm/a,respectively,andthe cumulative deformation of them are-24.6 mm,-104.3 mm,and-115.2 mm,respectively.The monitoring results are consistent with the field deformation trend.The slope disaster concentration area in the mining area could be timely and accurately discovered and identified by using the SBAS-InSAR technology,so that provide prevention and control information for geological disaster engineering.This method has reference value and application prospect.
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