测绘通报 ›› 2026, Vol. 0 ›› Issue (5): 72-79.doi: 10.13474/j.cnki.11-2246.2026.0513

• 学术研究 • 上一篇    

多源数据辅助下的苏州市时序InSAR地表沉降监测与成因分析

李子豪1, 孙承志1,2, 毕凌宇1, 乔申1   

  1. 1. 南京信息工程大学遥感与测绘工程学院, 江苏 南京 210044;
    2. 自然资源部遥感导航一体化应用工程技术创新中心, 江苏 南京 210044
  • 收稿日期:2026-01-06 发布日期:2026-06-09
  • 通讯作者: 孙承志。E-mail:003453@nuist.edu.cn
  • 作者简介:李子豪(2000—),男,硕士生,主要研究方向为InSAR形变监测。E-mail:202312480150@nuist.edu.cn
  • 基金资助:
    国家重点研发计划(2023YFB3906103)

Time-series InSAR monitoring and cause analysis of surface subsidence in Suzhou supported by multi-source data

LI Zihao1, SUN Chengzhi1,2, BI Lingyu1, QIAO Shen1   

  1. 1. School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
    2. Engineering Innovation Center for Integrated Remote Sensing and Navigations, Ministry of Natural Re-sources, Nanjing 210044, China
  • Received:2026-01-06 Published:2026-06-09

摘要: [目的]日益频发的城市地表沉降现象会对地表或地下构建物造成破坏,阻碍地区建设和资源开发,有效的地表形变监测对城市地面沉降的治理和预防至关重要。[方法]本文利用覆盖苏州市主城区的2021年1月—2023年12月的36景Sentinel-1A影像,基于SBAS-InSAR技术对苏州市主城区地面沉降进行了监测,获得了苏州市在该时间段的年均形变速率和累计沉降量;同时,结合历史光学影像、地铁建设数据、降水数据等对研究区域内的沉降原因进行了详细分析。[结果]研究结果表明,研究区整体形变速率范围为-42.6~21.9 mm/a,最大累计沉降量达127 mm,地面沉降受自然因素和人为因素共同影响。[结论]苏州市地面沉降受多源要素共同影响。其中,自然因素包括软土分布、降雨等;人为因素包括地铁建设和运营、建筑荷载的增加、道路施工等。

关键词: SBAS-InSAR, 地面沉降, Sentinel-1A, 苏州市

Abstract: [Purposes]The increasingly frequent occurrence of urban surface subsidence can damage above-ground or underground structures,hinder regional construction and resource development,and effective monitoring of surface deformation is crucial for the management and prevention of urban ground subsidence.[Methods]This study uses 36 Sentinel-1A images covering the main urban area of Suzhou from January 2021 to December 2023.Based on SBAS-InSAR technology,ground subsidence in the main urban area of Suzhou was monitored,obtaining the annual average deformation rate and cumulative subsidence during this period.In addition,combining historical optical images,subway construction data,and precipitation data,the causes of subsidence in the study area were analyzed in detail.[Findings]The results show that the overall deformation rate in the study area ranges from -42.6 to 21.9 mm/a,with a maximum cumulative subsidence of 127 mm,and ground subsidence is influenced by both natural and human factors.[Conclusions]Ground subsidence in Suzhou is affected by multiple factors.Natural factors include the soft soil distribution and rainfall,while human factors include subway construction and operation,increased building loads,and road construction.

Key words: SBAS-InSAR, ground subsidence, Sentinel-1A, Suzhou

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