济南地铁2号线沿线地表沉降监测与分析  

Monitoring and analysis of ground subsidence along Jinan Metro Line 2

作　　者：刘新[1] 张婷慧 杨陇徽 LIU Xin;ZHANG Tinghui;YANG Longhui(College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao Shandong 266590,China)

机构地区：[1]山东科技大学测绘与空间信息学院,山东青岛266590

出　　处：《北京测绘》2022年第10期1434-1438,共5页Beijing Surveying and Mapping

基　　金：国家测绘自主可控专项(816—517);山东科技大学科研创新团队支持计划项目(2014TDJH101)。

摘　　要：地铁沿线的稳定性关乎人民生命财产安全,对地铁沿线沉降监测,有助于聚焦异常形变区域,及时采取人工干预措施。本文基于差分干涉测量短基线集时序分析技术(SBAS-InSAR),利用20幅Sentinel-1A数据对2019—2021年间济南地铁2号线沿线1 km缓冲区进行地表沉降监测与分析。结果表明:在监测期内地表呈现不均匀的沉降,平均沉降速率为0.26 mm/a,最大沉降速率为-18.27 mm/a,最大累积沉降量为-68.51 mm。其中,腊山站至老屯站段、济泺路站至七里堡站段存在明显沉降现象。The stability along the subway lines is related to the safety of people's lives and property.Monitoring surface subsidence along the subway lines is helpful to focus on abnormal deformation areas and timely take manual intervention measures.Based on 20 Sentinel-1A data from 2019 to 2021,the surface subsidence monitoring and analysis of the 1 km buffer along Jinan Metro Line 2 were carried out using the small baseline subset(SBAS)-interferometric synthetic aperture radar(InSAR)technology.The results show that uneven surface subsidence occurs during the monitoring period,the average surface subsidence rate is 0.26 mm/a,the maximum subsidence rate is-18.27 mm/a,and the maximum cumulative subsidence is-68.51 mm.Furthermore,Lashan station to Laotun station section and Jiluolu station to Qilipu station section exist obvious subsidence phenomena.

关 键 词：小基线集技术 济南地铁二号线 Sentinel-1A 地表垂直形变 

分 类 号：P258[天文地球—测绘科学与技术]