Interferometic synthetic aperture radar (InSAR) technology has shown great application potential in monitoring geological disasters in mining areas. However,it is difficult for conventional time-series InSAR technology to detect enough radar targets in mining areas covered by vegetation,which causes underestimation or inaccurate estimation of deformation results. Aiming at the scarcity of measurement points in complex mining areas,the distributed scatterer InSAR analysis method can effectively increase the number of measurement points in the vegetation covered area,thereby accurately describing the temporal evolution and spatial distribution characteristics of deformation in mining areas. The long-term and high-intensity mining activities will cause the surface deformation of the goaf,posing serious threats to sustainable mining,infrastructure construction and the safety of lives and property. In order to understand the mining situation in the goaf of Puhe Coal Mine in Shenyang,based on InSAR high-precision monitoring data,the key underground mining parameters in the mine area are obtained through geophysical modeling inversion. The deformation field simulated based on the optimal parameters is consistent with the InSAR monitoring results,and the inversion mining parameters conform to the actual mining situation. Combining InSAR monitoring results with Okada model to invert mining area parameters can truly reflect the actual mining situation,accurately describe the surface deformation of goaf,and provide important information for scientific formulation of underground mining plans and sustainable development of the mining area.
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