| PSP-InSAR技术在地铁沿线的形变监测应用 |
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| 引用本文： | 金艳,俞志强,高晓雄.PSP-InSAR技术在地铁沿线的形变监测应用[J].测绘通报,2020,0(9):132-135. |
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| 作者姓名： | 金艳 俞志强 高晓雄 |
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| 作者单位： | 浙江省测绘科学技术研究院, 浙江 杭州 311100 |
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| 基金项目： | 浙江省基础公益研究计划（LGF18D010004） |
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| 摘 要： | 基于56景COSMO-SkyMed影像，本文采用PSP-InSAR技术对杭州地铁2号线沿线500 m范围进行地面沉降监测，并对形变区的位置、面积和数量进行了统计，在此基础上提取形变梯度大于0.1 mm/m的累计形变量点并开展比对分析。结果表明：①虽然地表形变集中区、形变严重区和形变梯度较大区域有着高度的重叠，但部分形变集中区内形变量和形变梯度并不大，也存在形变平稳区段形变梯度却较为显著现象，因此单从一个角度分析地铁沿线的形变，易增加漏检和错检的概率。②PSP-InSAR技术可从空间上完整表现地铁线上沉降的分布特征，对于地铁竣工运营期间的沉降监测具有显著意义，可为地铁的运营维护提供依据。
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| 关 键 词： | 地面沉降 PSP-InSAR 形变监测 地铁工程 形变梯度 |
| 收稿时间： | 2019-11-08 |
| 修稿时间： | 2020-05-26 |
Application of PSP-InSAR technology in deformation monitoring along the subway |
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| JIN Yan,YU Zhiqiang,GAO Xiaoxiong.Application of PSP-InSAR technology in deformation monitoring along the subway[J].Bulletin of Surveying and Mapping,2020,0(9):132-135. |
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| Authors: | JIN Yan YU Zhiqiang GAO Xiaoxiong |
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| Institution: | Zhejiang Academy of Surveying&Mapping, Hangzhou 311100, China |
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| Abstract: | Based on 56 COSMO-SkyMed images, this paper uses PSP-InSAR technology to monitor the land subsidence within 500 m area of Hangzhou Metro Line 2, and makes statistics on the location, area and quantity of the deformation zone. On this basis, the accumulative shape variable points with deformation gradient greater than 0.1 mm/m are extracted and compared. Results show that: ① Surface deformation and deformation gradient are basically the same in space, but there are some differences. Therefore, analyzing the deformation along the subway line from a single point of view will increase the probability of missed and wrong detection. ② PSP-InSAR technology can fully show the distribution characteristics of the settlement on the metro line in space. It is significant for the settlement monitoring during the completion and operation of the subway. It provides basis for the operation and maintenance of the subway. |
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| Keywords: | land subsidence PSP-InSAR deformation monitoring metro engineering deformation grad |
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