InSAR矿区沉降监测关键技术研究

发布时间：2018-06-05 04:08

本文选题：矿区沉降 + InSAR　；参考：《广东工业大学》2015年硕士论文

【摘要】：InSAR是一种微波遥感技术,对地形变监测精度达到厘米甚至毫米级,并具备大空间范围的监测能力,在矿区沉降监测方面有着传统监测手段无法比拟的优势。本文简要介绍了InSAR技术的基本原理；分析了InSAR技术在矿区沉降监测方面的研究现状及存在问题,并对矿区沉降监测中高相位梯度去相干和非均匀沉降等关键问题进行了研究。以唐山矿区为例,重点分析了用插值过采样的方法来提高SAR影像相干性,从而提高干涉图的质量,使矿区沉降中心的干涉条纹更加清晰,分界更加明显。使用该方法处理InSAR数据,获取了覆盖唐山矿区的66幅干涉图。另外,本文采用线性拟合方法和空域相关方法对矿区非均匀的时间序列变形进行提取。以矿区的几个典型沉降中心为例,具体分析了这些监测点地表沉陷的时空演变过程,发现唐山矿区在2004年11月到2005年1月间,沉降最大处超过90mm.该结果为指导矿区建筑物、铁路等基础设施的建设及分布提供了数据支持,验证了InSAR技术在矿业城市地表沉降监测中的可行性,能够满足煤矿区可持续发展的需要。
[Abstract]:InSAR is a kind of microwave remote sensing technology. The monitoring precision of terrain change is centimeter and even millimeter, and has the ability to monitor the large space range. It has the advantage that the traditional monitoring means can not be compared in the settlement monitoring of the mining area. This paper briefly introduces the basic principle of the InSAR technology, and analyses the InSAR technology in the settlement monitoring of the mining area. The research status and existing problems are studied, and the key problems of high phase gradient removal and non-uniform settlement in settlement monitoring in mining area are studied. Taking Tangshan mining area as an example, the interpolation oversampling method is used to improve the coherence of SAR image, thus improving the quality of the interferogram and making the interference fringe more clear in the settlement center of the mining area. The demarcation is more obvious. Using this method to deal with InSAR data, 66 interferograms covering the Tangshan mining area are obtained. In addition, this paper uses linear fitting method and spatial correlation method to extract the non uniform time series deformation of the mining area. Taking several typical settlement centers of the mining area as an example, the concrete analysis of the surface subsidence of these monitoring points is made. In the process of space evolution, it was found that the Tangshan mining area was between November 2004 and January 2005, the largest settlement exceeded 90mm., which provided data support to guide the construction and distribution of the infrastructure of the mining area and railway, and verified the feasibility of InSAR technology in the monitoring of the surface subsidence of the mining city, which could meet the needs of the sustainable development of the coal mining area. Yes.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD325.4

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