地铁快速建设期苏州主城区地面沉降时序InSAR分析  

Time-Series Analysis of Ground Subsidence in Suzhou Central Areaduring the Rapid Subway Construction Period with InSAR

作　　者：张丽娜 宋瑞庆 宋鑫友 伍吉仓 赵伟 史守正 陈杰 张泽峰 严勇 ZHANG Lina;SONG Ruiqing;SONG Xinyou;WU Jicang;ZHAO Wei;SHI Shouzheng;CHEN Jie;ZHANG Zefeng;YAN Yong(School of Geography Science and Geomatics Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China;Cryosphere Research Station on the Qinghai-Xizang Plateau,State Key Laboratory of Cryosphere Science,Northwest Institute of Eco-Environment and Resources,CAS,Lanzhou 730000,China;Suzhou Xiangcheng Testing Co Ltd,Suzhou 215131,China)

机构地区：[1]苏州科技大学地理科学与测绘工程学院,苏州市215009 [2]同济大学测绘与地理信息学院,上海市200092 [3]中国科学院西北生态环境资源研究院冰冻圈科学国家重点实验室青藏高原冰冻圈观测研究站,兰州市730000 [4]苏州市相城检测股份有限公司,苏州市215131

出　　处：《大地测量与地球动力学》2024年第9期945-950,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(42074022,41874004)。

摘　　要：为监测地铁快速建设期苏州主城区的地面沉降,采用2010~2020年的TerraSAR-X和Sentinel-1数据,结合水准观测数据,利用永久散射体合成孔径雷达干涉测量(persistent scatterer interferometric synthetic aperture radar, PS-InSAR)技术对苏州主城区进行时序分析。结果表明,苏州古城区整体比较平稳,研究区内最大沉降点位于阳山,沉降速率超过-20 mm/a;苏州主城区总体沉降趋势变缓,沉降范围明显缩小,甚至在漕湖东侧和太阳路北出现小面积抬升;受地铁施工影响,邻近地铁的建筑沉降速率明显加快,特别是新建成建筑,其本身的短时荷载沉降与地铁建设开发引起的沉降相叠加,沉降速率达到-10 mm/a以上。To monitor land subsidence in Suzhou city during the rapid construction of subway,this paper focuses on the temporal analysis of ground deformation in Suzhou central area with PS-InSAR,using TerraSAR-X and Sentinel-1 data in 2010-2020 combined with leveling observation data.The results show that the ancient city area of Suzhou is stable relatively,and the maximum settlement points are in Yangshan with the settlement rate exceeding-20 mm/a.The subsidence trend has slowed down in Suzhou central area,with a significant reduction in the subsidence range,and several small uplifted areas have appeared particularly in the east of Caohu,and the north of Taiyang road.The settlement of buildings nearby the subway accelerate significantly with the influence of subway construction,especially for new buildings,whose own short-term sedimentary settlement is superimposed with the settlement of subway construction,resulting in the subsidence rate exceeding-10 mm/a.

关 键 词：苏州主城区 PS-INSAR 沉降监测 地铁建设期 时序分析 

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]