| 基于TCP-InSAR的采动区铁路动态沉降监测与时序分析 |
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| 引用本文： | 鹿璐,范洪冬,郑美楠,邹昊.基于TCP-InSAR的采动区铁路动态沉降监测与时序分析[J].大地测量与地球动力学,2019,39(2):164-168. |
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| 作者姓名： | 鹿璐 范洪冬 郑美楠 邹昊 |
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| 作者单位： | 中国矿业大学环境与测绘学院,徐州市大学路1号,221116;中国矿业大学国土环境与灾害监测国家测绘地理信息局重点实验室,徐州市大学路1号,221116 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;企业项目 |
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| 摘 要： | 为高效获取采动区长时间序列形变,监控煤炭开采对矿区铁路的影响,研究一种基于TCP-InSAR(temporarily coherent point interferometric synthetic aperture radar)的采动区铁路形变监测方法。该方法根据时间序列SAR影像间的相干性,选取临时相干点构建Delaunay三角网,并通过离群值探测去除具有相位模糊度的TCP间的弧段,最后采用最小二乘解算得到区域地表变形。实验使用2016-10～2017-04时间段内的15景Sentinel-1A数据,利用TCP-InSAR技术获得某矿区的铁路形变。结果表明,受采动影响,该时间段内铁路最大下沉值为95mm,最大倾斜坡度为0.37‰。利用TCP-InSAR技术可实现采动区内铁路长时间的动态形变监测。
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| 关 键 词： | TCP-InSAR Sentinel-1A 开采沉陷 铁路 变形监测 |
Dynamic Settlement Monitoring and Time Series Analysis of Railway in Mining Area Based on TCP-InSAR |
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| LU Lu,FAN Hongdong,ZHENG Meinan,ZOU Hao.Dynamic Settlement Monitoring and Time Series Analysis of Railway in Mining Area Based on TCP-InSAR[J].Journal of Geodesy and Geodynamics,2019,39(2):164-168. |
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| Authors: | LU Lu FAN Hongdong ZHENG Meinan ZOU Hao |
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| Institution: | (School of Environment Science and Spatial Information,China University of Mining and Technology,1 Daxue Road,Xuzhou 221116,China;Key Laboratory of Land Environment and Disaster Monitoring,NASMG,China University of Mining and Technology,1 Daxue Road,Xuzhou 221116,China) |
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| Abstract: | In order to effectively acquire the long time series deformation of mining area and monitor the influence of coal mining on railway, a railway deformation monitoring method based on TCP-InSAR (temporarily coherent point interferometric synthetic aperture radar) is studied. According to the coherence between SAR images in time series, this method selects temporary coherent points to construct Delaunay triangulation network, removes arcs with phase ambiguity between TCPs through outlier detection, and finally obtains the regional surface deformation by least squares solution. Based on 15 Sentinel-1A data from October 2016 to April 2017, using TCP-InSAR technology obtains the railway deformation in the mining area. The experimental results show that the maximum subsidence value of the railway is 95 mm and the maximum inclined slope is 0.37 per thousand during the mining period. The TCP-InSAR technology can be used to monitor the long time dynamic deformation of the railway in the mining area. |
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| Keywords: | TCP-InSAR Sentinel-1A mining subsidence railway deformation monitoring |
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