基于时序InSAR的上海地区2018~2020地铁沿线沉降监测分析  

Analysis of Time-Series InSAR-Based Settlement Monitoring along the 2018-2020 Metro Line in Shanghai Area

作　　者：周吕 李佳豪 王成 李淑[4] 朱子林 鲁金金 ZHOU Lu;LI Jiahao;WANG Cheng;LI Shu;ZHU Zilin;LU Jinjin(College of Geomatics and Geoinformation,Guilin University of Technology,Guilin 541006,China;Beijing Key Laboratory of Urban Spatial Information Engineering,Beijing 100038,China;Guangxi Institute of Natural Resources Survey and Monitoring,Nanning 530023,China;Key Laboratory for Urban Underground Engineering of Ministry of Education,Beijing Jiaotong University,Beijing 100044,China;Nanning College of Technology,Guilin 541006,China)

机构地区：[1]桂林理工大学测绘地理信息学院,桂林市541006 [2]城市空间信息工程北京市重点实验室,北京市100038 [3]广西壮族自治区自然资源调查监测院,南宁市530023 [4]北京交通大学城市地下工程教育部重点实验室,北京市100044 [5]南宁理工学院,桂林市541006

出　　处：《大地测量与地球动力学》2021年第11期1177-1182,共6页Journal of Geodesy and Geodynamics

基　　金：广西自然科学基金(2018GXNSFBA050006);武汉市科技计划(2019010702011314);城市空间信息工程北京市重点实验室项目(2020217);广西高校中青年教师科研基础能力提升项目(2020KY06032);国家自然科学基金(42064003);广西科技计划(桂科AD19110107,AD19245060)。

摘　　要：基于覆盖上海地区2018~2020年的35景Sentinel-1A影像数据,采用PSInSAR方法获取该地区3条地铁线路的年平均沉降速率和累积沉降量,并分析沉降原因。结果表明:1)上海地区呈现不均匀沉降,沉降主要发生在上海市主城区南部的闵行区许泾村附近,最大累积沉降量达-47.3 mm;2)上海市闵行区出现明显的沉降漏斗现象,并与该地区城市基础设施建设及地下水水位变化呈正相关;3)上海市地铁5、8、16号线路均有部分路段存在明显沉降现象,地铁5号线途经闵行区周围时沉降最明显,最大沉降速率达-12.0 mm/a。最后给出上海地区以及主要地铁沿线地表沉降的时空特征和地表沉降与其影响因子之间的相互关系。Based on the Sentinel-1 A image data of 35 scenes covering Shanghai from 2018 to 2020, we use the PSInSAR method to obtain the annual average settlement rate and cumulative settlement of three metro lines in Shanghai, and analyze the reasons. The results show that: 1) The uneven settlement occurs in Shanghai, which mainly occurs near Xujing village, Minhang district in the south of the main urban area of Shanghai, with the maximum cumulative settlement of-47.3 mm. 2) The obvious settlement funnel appears in Minhang district of Shanghai, which is positively correlated with the urban infrastructure construction and groundwater level changes in this area. 3) There are some section of Shanghai metro lines 5, 8 and 16, with obvious settlement phenomenon, and the settlement around metro line 5 passing through Minhang district is the most obvious, with a maximum settlement rate of-12.0 mm/a. This study shows the spatio-temporal characteristics of surface settlement and the relationship between surface settlement and its influencing factors in Shanghai and along the main metro lines.

关 键 词：上海地区 PSINSAR 基础设施 Sentinel-1A 沉降时空特征 

分 类 号：P237[天文地球—摄影测量与遥感] P258[天文地球—测绘科学与技术]