采煤矿区形变场的多基线D-InSAR监测——以梁宝寺矿区为例

Multi-Baseline D-InSAR Monitoring of Deformation Field in Coal Mining Area:A Case Study of Liangbaosi Mining Area

以合成孔径雷达差分干涉测量技术为基础发展形成的多基线D-InSAR技术能够在有效降低失相干现象影响的同时,抑制残余地形误差及大气条件的干扰,成为当前地表微小形变演化过程获取的重要手段。而将其应用于大范围矿区开采形变场的获取上,能够充分提高矿区沉陷信息获取的效率及完整程度。本文以加拿大RADARSAT-2卫星获取的5景高分辨率影像为数据源,借助于多基线D-InSAR方法对济宁市梁宝寺矿区开采引起的地表形变场进行解译。结果表明:多基线D-InSAR技术能够很好地识别济宁市梁宝寺矿区监测时段内存在的多处沉降漏斗,为获取其沉陷影响面积及严重程度的划分提供了基础数据。

Multi-baseline D-InSAR technology based on differential interferometry of synthetic aperture radar can effectively reduce the effects of de-coherence,and at the same time,restrain the interference of residual terrain errors and atmospheric conditions.It has become an important means to acquire the evolution process of surface micro-deformation.The application of this method on the acquisition of large-scale mining deformation field can fully improve the efficiency and completeness of mining subsidence information acquisition.Five high resolution images acquired by Canadian RADARSAT-2 satellite are used as data sources to interpret the surface deformation field caused by mining in Liangbaoshi mining area of Ji’ning city by means of multi-baseline D-InSAR method.The results show that the multi-baseline D-In SAR technology can identify many subsidence funnels in the monitoring period of Liangbaosi mining area in Ji’ning city,which provides a good basic data for the division of the affected area and severity of subsidence.