基于D-InSAR的矿区地面沉降监测

D-InSAR-based monitoring of land subsidence in mining area

为获得矿区地表的具体形变量和形变趋势,根据矿区地表沉陷形变特征,分析了合成孔径雷达差分干涉测量(D-InSAR)技术中SAR影像配准、去平地效应、干涉图滤波以及相位解缠等关键问题。结合实际矿区SAR影像数据,利用相应技术的经典处理算法,获取了煤炭开采引起的地面沉降数据。实验结果与实地勘察结论基本一致,证明D-InSAR技术在地面沉降监测方面具有强大优势。该研究可为矿区生产、整体规划与数字化矿山建设提供技术支持。

This paper provides an insight into the specific mining surface deformation and deformation trend. The research building on the characteristics behind subsidence deformation in mines,works towards the following objectives： analyzing the key issues,such as SAR image registration,flat-earth removal,interferogram filtering,and phase unwrapping,all of which are involved in synthetic aperture radar differential interferometry（ D-InSAR）; combined with SAR image data derived from actual mining area,employing the classical processing algorithm of corresponding technology to carry out tests and thereby derive the data on land subsidence caused by coal mining; and providing the results basically consistent with the field investigation results to verify the strong advantage D-In SAR technology has in land subsidence monitoring. The research could provide technical support for mining area production,overall planning and digital mine construction.