InSAR技术在合肥地铁形变监测中的应用研究  

Application of InSAR technology in deformation monitoring of Hefei metro

作　　者：于书媛[1,2] 陈靓 杨源源[1,2] 张理想 骆佳骥[1,2] YU Shuyuan;CHEN Liang;YANG Yuanyuan;ZHANG Lixiang;LUO Jiaji(Anhui Earthquake Agency,Hefei 230031,China;Anhui Mengcheng National Geophysical Observatory,Mengcheng,Anhui 233527,China;Anhui Bureau of Surveying and Mapping,Hefei 230000,China)

机构地区：[1]安徽省地震局,合肥230031 [2]安徽蒙城地球物理国家野外科学观测研究站,安徽蒙城233527 [3]安徽省测绘局,合肥230000

出　　处：《测绘科学》2022年第3期96-102,109,共8页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41802224);中国地震局监测、预报、科研三结合课题项目(SJH-202001041)。

摘　　要：针对地铁建设与运营过程的中的沉降问题已经成为当前城市建设中的一个严峻地质灾害问题,采用时序InSAR技术获取2017年11月—2020年8月合肥市城区及周边地面形变分布信息,系统分析了合肥市主城区的地铁沿线地表沉降时空演化规律。形变区空间分布存在合肥市北部、中部的地铁线路沿线相对稳定,西部、南部线路有区域性的不均匀沉降问题,部分线路的沉降速率较大。运用时序InSAR技术监测地铁沉降的研究结果表明:合肥市地铁沿线的时空形变分布图能够较为真实的反映合肥市地铁沿线的沉降问题,可为城市地铁沉降监测和地质灾害防治提供可靠的分析依据和数据支持。Aiming at the settlement problem in the process of subway construction and operation,which has become a severe geological disaster problem in current urban construction,this paper uses time series InSAR technology to obtain the distribution information of ground deformation in and around Hefei city from November 2017to August 2020,and systematically analyzes the temporal and spatial evolution law of ground settlement along the subway in the main urban area of Hefei city.The spatial distribution of deformation area is relatively stable along the subway lines in the north and middle of Hefei,and there are regional uneven settlement problems in the West and south of Hefei,and the settlement rate of some lines is large.The research results of monitoring subway settlement using time series InSAR technology show that the temporal and spatial deformation distribution map along Hefei subway can truly reflect the settlement problems along Hefei subway,and can provide reliable analysis basis and data support for urban subway settlement monitoring and geological disaster prevention.

关 键 词：地面沉降 地铁 时序InSAR 干涉测量 

分 类 号：P237[天文地球—摄影测量与遥感]