| InSAR填海区地铁沿线地表沉降反演分析 |
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| 引用本文： | 施显健,任超,周吕,黄远林,梁月吉,朱子林.InSAR填海区地铁沿线地表沉降反演分析[J].测绘科学,2021,46(2):146-151,164. |
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| 作者姓名： | 施显健 任超 周吕 黄远林 梁月吉 朱子林 |
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| 作者单位： | 桂林理工大学测绘地理信息学院,广西桂林541004;桂林理工大学测绘地理信息学院,广西桂林541004;广西空间信息与测绘重点实验室,广西桂林541004;桂林理工大学测绘地理信息学院,广西桂林541004;武汉大学地球空间环境与大地测量教育部重点实验室,武汉430079;北部湾大学资源与环境学院,广西钦州535011 |
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| 基金项目： | 国家自然科学基金项目(41461089);广西自然科学基金资助项目(2018GXNSFBA050006);广西科技计划项目(桂科AD19110107);武汉市科技计划项目(2019010702011314);武汉大学地球空间环境与大地测量教育部重点实验室开放基金资助项目(18-01-01);桂林理工大学科研启动基金资助项目(GUTQDJJ2018036);广西中青年教师基础能力提升项目(2018KY0247);广西空间信息与测绘重点实验室项目(16-380-25-22,15-140-07-34)。 |
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| 摘 要： | 为了更好地监测和掌握深圳填海区地铁工程结束后地铁沿线的地面沉降情况,该文利用TS-InSAR技术和20景2017年8月15日—2019年3月14日的Sentinel-1A SAR数据,借助POD精密定轨星历和ASTER GDEM V2分别去除轨道误差和地形相位,反演了深圳填海区2017—2019年地表沉降时间序列,并在此基础上重点分析了填海区地铁沿线地面沉降的时空演变规律以及地面沉降成因。结果显示,填海区各地铁沿线的地面沉降特征较为明显,最大沉降速率为-17.52 mm/a。其中,宝安中心、前海湾、深圳湾区段地铁沿线的地面沉降趋势较为严重,其地面沉降呈现逐渐增强和扩散趋势。
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| 关 键 词： | 合成孔径雷达 填海地区 地铁网络 沉降反演 哨兵-1A |
Land subsidence inversion analysis along the subway in the reclamation area based on InSAR |
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| SHI Xianjian,REN Chao,ZHOU Lyu,HUANG Yuanlin,LIANG Yueji,ZHU Zilin.Land subsidence inversion analysis along the subway in the reclamation area based on InSAR[J].Science of Surveying and Mapping,2021,46(2):146-151,164. |
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| Authors: | SHI Xianjian REN Chao ZHOU Lyu HUANG Yuanlin LIANG Yueji ZHU Zilin |
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| Institution: | (College of Geomatics and Geoinformation,Guilin University of Technology,Guilin,Guangxi 541004,China;Guangxi Key Laboratory of Spatial Information and Geomatics,Guilin,Guangxi 541004,China;Key laboratory of Geospace Environment and Geodesy,Ministry of Education,Wuhan University,Wuhan 430079,China;College of Resources and Environment,Beibu Gulf University,Qinzhou,Guangxi 535011,China) |
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| Abstract: | In order to monitor and grasp the land subsidence along the subway line after the completion of the Shenzhen reclamation area subway project,based on time-series interferometry synthetic aperture radar(TS-InSAR)technology and 20 scenes of Sentinel-1 ASAR data from August 15,2017 to March 14,2019,this paper used POD precise orbit ephemerides and ASTER GDEM V2 to remove the orbital error and the terrain phase,respectively.The land subsidence time series of Shenzhen reclamation from 2017 to 2019 were obtained.On this basis,the paper analyzed the temporal and spatial evolution of land subsidence along the subway in the reclamation area and the causes of land subsidence.The results showed that the surface settlement characteristics of the subways along the reclamation area were more obvious,the maximum subsidence rate was-17.52 mm/a.Among them,the land subsidence trend along the subway lines in Baoan Center,Qianhai Bay and Shenzhen Bay Section was more serious,and its land subsidence was gradually increasing and spreading. |
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| Keywords: | interferometry synthetic aperture radar(InSAR) reclamation area subway network subsidence inversion Sentinel-1A |
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