| 高分辨率时序InSAR技术在青藏输电杆塔精细形变监测中的应用 |
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| 引用本文： | 范鹏,王硕,张正加,刘修国,陈启浩.高分辨率时序InSAR技术在青藏输电杆塔精细形变监测中的应用[J].测绘通报,2021,0(3):118-122. |
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| 作者姓名： | 范鹏 王硕 张正加 刘修国 陈启浩 |
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| 作者单位： | 南瑞集团(国网电力科学研究院)有限公司,江苏 南京211106;国网电力科学研究院武汉南瑞有限责任公司,湖北 武汉430074;自然资源部测绘发展研究中心,北京100830;中国地质大学(武汉)地理与信息工程学院,湖北 武汉430074 |
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| 基金项目： | 国家自然科学基金(41801348;61801443);中国科学院遥感与数字地球研究所数字地球重点实验室开放基金(2017LDE006);TerraSAR-X New Modes AO项目(HYD2420)。 |
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| 摘 要： | 随着全球气候变化和人类活动剧增，青藏高原的多年冻土环境逐渐变得越来越脆弱。作为青藏高原最重要的基础设施之一，青藏输电线路已于2011年建成并投入使用。由于恶劣的气候和冻土的冻融作用，青藏输电线路部分区域的稳定性遭到破坏，为了保障输电线路的安全运营，需要对输电杆塔稳定性进行监测。传统监测方法（GPS和水准测量）对输电杆塔形变监测存在局限性。本文使用TerraSAR-X ST模式高分辨率SAR数据，采用考虑温度热膨胀形变模型的时序InSAR方法对青藏高原北麓河地区的输电线路杆塔进行形变监测，获得了输电杆塔和通信铁塔的形变速度、高度和热膨胀。结果证实了高分辨率时序InSAR技术在输变电工程形变监测应用中具有广阔的应用前景。
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| 关 键 词： | 青藏高原 输电杆塔 InSAR 形变 冻土 |
| 收稿时间： | 2020-11-05 |
| 修稿时间： | 2021-01-10 |
Deformation monitoring of Qinghai-Tibei transmission tower using high resolution time-series InSAR technology |
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| FAN Peng,WANG Shuo,ZHANG Zhengjia,LIU Xiuguo,CHEN Qihao.Deformation monitoring of Qinghai-Tibei transmission tower using high resolution time-series InSAR technology[J].Bulletin of Surveying and Mapping,2021,0(3):118-122. |
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| Authors: | FAN Peng WANG Shuo ZHANG Zhengjia LIU Xiuguo CHEN Qihao |
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| Institution: | 1. NARI Group (State Grid Electric Power Research Institute) Co., Ltd., Nanjing 211106, China;2. Wuhan NARI Limited Liability Company, State Grid Electric Power Research Institute, Wuhan 430074, China;3. Mapping Development Research Center, Ministry of Natural Resources of China, Beijing 100830, China;4. School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | With the global climate changing and increasing of anthropogenic activity,the dynamics permafrost environment of QinghaiTibet Plateau( QTP) is becoming fragile. As one of the most important infrastructures in the QTP,the Qinghai-Tibet power transmission line( QTPTL) has been constructed since 2011. In some section,the stability of QTPTL has been damaged due to the harsh climate and the effect of freezing and thawing of permafrost. To ensure the safety of the QTPTL,it is necessary to monitor the deformation of QTPTL. Conventional measurement methods( GPS and levelling) have limitations of monitoring deformation of QTPTL.In this paper,structural health and stability of QTPTL are evaluated using time-series InSAR with high resolution Terra SAR-X staring spotlight mode images. The structure feature of the transmission line tower in high resolution SAR image are analyzed. Then the deformation velocity,height and thermal dilation of the QTPTL is retrieved. The results demonstrated that potential for the deformation monitoring of QTPTL using high resolution time-series InSAR. |
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| Keywords: | Qinghai-Tibet Plateau power transmission tower InSAR deformation permafrost |
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