基于PS-InSAR技术的南宁地铁建设期沿线长时序沉降监测及形变分析  

Long term settlement monitoring and deformation analysis along the Nanning metro line based on PS-InSAR technology

作　　者：吴海 卢鹏 文诗宝 朱海鹏 Wu Hai;Lu Peng;Wen Shibao;Zhu Haipeng(Guangxi Polytechnic of Construction,Nanning 530007,China;Guangxi Road and Bridge Engineering Group Co.,Ltd.,Nanning 530200,China;Nanning Survey and Design Institute Group Co.,Ltd.,Nanning 530000,China)

机构地区：[1]广西建设职业技术学院,南宁530007 [2]广西路桥工程集团有限公司,南宁530200 [3]南宁市勘测设计院集团有限公司,南宁530000

出　　处：《工程勘察》2025年第3期46-51,77,共7页Geotechnical Investigation & Surveying

基　　金：2024年度广西高校中青年教师科研基础能力提升项目(编号:2024KY1204),项目名称:基于InSAR技术的市政交通设施形变分析及安全评估研究;南宁市优秀青年科技创新创业人才培育项目(编号:RC20220201),项目名称:基于大数据的三维地质建模关键技术研究及应用.

摘　　要：针对城市地铁建设及运用过程会引起沿线地面发生沉降变形问题,采用PS-InSAR技术获取2015年1月~2020年1月南宁市地铁建设区域的沉降信息,分析城市地铁沿线沉降变形规律。结果表明,南宁市沉降呈不均匀分布,城市交通设施地铁1~5号线平均形变速率在-9.02~5.13mm/a,地铁5号线虎邱站存在沉降、形变突变,结合实地调查结果,推断其与工程建设活动引起的基坑坍塌、基坑地下水位下降、盾构施工引起的地层损失有关。本文可为后续南宁地铁建设沿线变形预测及防治工作提供应用参考。In response to the problem of ground settlement and deformation along the urban subway construction and operation process,PS InSAR technology was used to obtain settlement information of the subway construction area in Nanning from January 2015 to January 2020,and to analyze the settlement and deformation laws along the urban subway.The results show that the settlement in Nanning City is unevenly distributed,and the average deformation rate of urban transportation facilities on subway lines 1~5 is between-9.02 and 5.13mm/a.There are sudden changes in settlement and deformation at Huqiu Station on subway Line 5.Based on field investigation results,it is inferred that this is related to the collapse of foundation pits caused by engineering construction activities,the decrease of groundwater level in foundation pits,and the geological losses caused by shield tunneling construction.This study can provide application reference for deformation prediction and prevention along the Nanning metro line in the future.

关 键 词：沉降监测 形变分析 PS-INSAR 南宁地铁 

分 类 号：P237[天文地球—摄影测量与遥感]