Measuring Mining Induced Subsidence by Using InSAR Technique——Taking Wuan Mining Area in Hebei as An Example
应用InSAR技术测量矿山沉降与变化分析——以河北武安矿区为例

The InSAR technique has become one of the important tools to measure small surface deformation.In Wuan region of Hebei province,surface deformation occurs to different degrees due to mining activity,causing more geologic disasters.It is necessary to determine the scope and extent of surface subsidence and analyze the changing trend for working out actual resolved plan.In this paper,many pairs SAR data,Jers-1 and ENVISAT SAR data from 1992,were used in InSAR processing.The best SAR pairs were selected and feasible technique plan was determined and the different D-InSAR images were obtained according to the time and baseline of SAR pairs.Finally,the scope and extent information at different periods were acquired.Besides,taking Huilan village as a example shows the mineral area subsidence evolvement procedure.The process flow and key step of InSAR technique are summarized by the application of Wuan subsidence measurement.In the end,the result of InSAR application is evaluated.