Monitoring and early-warning of surface deformation in mine goaf based on InSAR

Abstract

To study the monitoring and early warning ability of DInSAR and SBAS InSAR for mine earthquake collapse in goaf area, this paper uses the two InSAR techniques to process the 11 scene C-band Sentinel-1A SAR images before and after the mine earthquake to obtain the mine deformation by taking the coal mine in Shandong Province where mine earthquake recently occurred in goaf area as the research area. The result shows that both InSAR technologies detected abnormal surface deformation in the mining area, which converted from relatively stable deformation process to obvious subsidence. DInSAR and SBAS InSAR can be used to detect long-term surface deformation process and abnormal deformation in the goaf, and provide a reference for the analysis of the surface stability of the goaf area and early warning of mine earthquakes.

Keywords

• dinsar
• sbas insar
• goaf
• mine earthquake
• surface deformation monitoring