融合D-InSAR和Offset-tracking技术的矿区沉降信息提取

发布时间：2018-04-03 23:05

本文选题：D-InSAR　切入点：Offset-tracking　出处：《河南理工大学学报(自然科学版)》2017年05期

【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 in mining area has the characteristics of high subsidence speed and large value. In view of the problem that it is very difficult to obtain the information of the whole basin of surface subsidence caused by coal mining by using synthetic aperture radar interferometry (InSAR) technology.A method of extracting settlement information of mining area by combining D-InSAR and Offset-tracking technology is presented.Taking 52304 face of a certain mine in Shaanxi province as an example, the information of small and large gradient deformation in subsidence basin is extracted by D-InSAR and Offset_tracking techniques, and the problem of D-InSAR incoherence and the advantages of Offset_tracking monitoring are analyzed. Finally, the results obtained from the two methods are fused.The time series deformation diagram above the working face is obtained. The relative error of the maximum subsidence in the example is 0.5 and 7.3.The results show that Offset-tracking can effectively solve the problem that D-InSAR can not monitor the settlement of large gradient in mining area, and this method can provide a new technical means for mining subsidence monitoring in mining area.
【作者单位】：江苏省水文水资源勘测局徐州分局;中国矿业大学资源与地球科学学院;中交上海航道勘察设计研究院有限公司;中国矿业大学环境与测绘学院;
【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)
【分类号】：TD327

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