基于D-InSAR技术的矿区沉降监测研究

Research on Mining Area Subsidence Monitoring Based on D-InSAR Technology

为了研究D-InSAR技术在矿区沉降监测中的可行性及精度问题,文章以山东省邹城某矿区为研究对象,利用覆盖矿区的两景TerraSAR-X数据,采用二轨法D-InSAR技术,在完成图像配准、去除地形相位、滤波和相位解缠后获取地表形变图,重点从图中6个明显沉降区选取1个沉降明显区域,从二维和三维视角查看沉降图,并选取9个点位的沉降监测结果与同期水准观测数据进行比较,二者的皮尔逊系数高达0.96,具有极高的相关性,由此可以说明二轨法D-InSAR技术具有较高的监测精度,在矿区沉降监测领域具有较强的应用优势。

In order to study the feasibility and accuracy of D-InSAR technology in subsidence monitoring of the mining area,taking a mining area in Zoucheng,Shandong Province as the research object,this paper uses two scenes of TerraSAR-X data covering the mining area and adopts twopass D-InSAR technology to obtain the surface deformation map after completing image registration,removing terrain phase,filtering and phase unwrapping.One obvious subsidence area is selected from six obvious subsidence areas in the map,and the subsidence map is viewed from two-dimensional and three-dimensional perspectives.The subsidence monitoring results of 9 points are compared with the leveling observation data in the same period,and the Pearson coefficient of the two is as high as 0.96,indicating a high correlation,which shows that the two-pass D-InSAR technology has high monitoring accuracy and has strong application advantages in the field of mining area subsidence monitoring.