作者：刘沂轩；杨俊凯；范洪冬；杜珍应；曹久立

第一作者单位：‍江苏省水文水资源勘测局徐州分局

摘要：矿区开采沉陷具有沉降速度快、量值大的特点,针对使用合成孔径雷达干涉测量(InSAR)技术很难正确获取煤炭开采引起的地表下沉全盆地信息的问题,提出融合D-InSAR和Offset-tracking技术提取矿区沉降信息的方法。试验以陕西某矿52304工作面为例,分别采用D-InSAR和Offset_tracking技术提取了下沉盆地微小及大梯度形变信息,分析了D-InSAR中失相干问题和Offset_tracking的监测优势,最后将两者得到的结果进行融合,获取了工作面上方的时序形变图,实例中最大下沉处的相对误差为0.5%~7.3%。结果表明,Offset-tracking可以有效解决D-InSAR无法监测矿区大梯度沉降的问题,该方法可为矿区开采沉陷监测提供新的技术手段。

Abstract：Mining Subsidence has a characteristics of fast rate and large magnitude.Currently, through using of synthetic aperture radar interferometry (InSAR) technology is difficult to get correct information on the whole basin surface subsidence caused by coal mining.To solve this problem, a new method is proposed which is combined D-InSAR and Offset_tracking technology to extract deformation mining subsidence.Firstly, subsidence basin boundary is obtained and established by using D-InSAR.The subsidence basin edge is generated by Offset_tracking technology.Secondly, the loss-related problems in D-InSAR and the advantages of Offset_tracking are analyzed.Finally, combine with the inversion of the basin center and D-InSAR acquired boundary, the time series deformation value above the working face is obtained.The relative error of maximum subsidence point is from 0.5% to 7.3%.The experimental results show that this method can effectively solve the problem which InSAR technology can not monitor large gradient deformation in mining subsidence, .It provides a new idea for the application of InSAR technology in mining subsidence monitoring.

基金：国家自然科学基金资助项目(41272389)；测绘地理信息公益性行业科研专项(201412016)；

关键词：D-InSAR;Offset-tracking;开采沉陷;矿区沉陷信息;

DOI：10.16186/j.cnki.1673-9787.2017.05.008

分类号：TD327