廊坊地区地表沉降SBAS-InSAR监测分析  

Analysis of surface subsidence monitoring in Langfang area based on SBAS-InSAR technology

作　　者：蒋喆[1] 任超 赖永明[1] JIANG Zhe;REN Chao;LAI Yong-ming(Guangxi Vocational College of Water Resources and Electric Power,Nanning 530023,China;College of Geomatics and Geoinformation,Guilin University of Technology,Guilin 541004,China;Guangxi Key Laboratory of Spatial Information and Geomatics,Guilin 541004,China)

机构地区：[1]广西水利电力职业技术学院,南宁530023 [2]桂林理工大学测绘地理信息学院,广西桂林541004 [3]广西空间信息与测绘重点实验室,广西桂林541004

出　　处：《广西水利水电》2022年第1期20-24,28,共6页Guangxi Water Resources & Hydropower Engineering

基　　金：国家自然科学基金资助项目(42064003);广西高校中青年教师基础能力提升项目(2018KY1012)。

摘　　要：利用覆盖廊坊地区的19景Sentinel-1A影像数据,采用SBAS-InSAR技术监测廊坊地区2015—2017年地表沉降演变特征,并对沉降时空分布特征进行分析和提取。结果表明:在监测时间段内廊坊地区年平均沉降形变速度区间为-17.9~8.5 mm/a;其中廊坊地区广阳区南尖塔镇存在明显的沉降漏斗,且最大年平均沉降速度达到-60.4 mm/a,累积沉降量最大达到-107.6 mm。分析表明:廊坊地区地表沉降形成的主要原因是地下水的过度开采和城镇化建设迅速发展等。Based on the 19-scene Sentinel-1A image data covering Langfang area,SBAS InSAR technology was used to monitor the evolution characteristics of surface subsidence in Langfang area from 2015 to 2017,and to anal⁃ysis and extract the temporal and spatial distribution characteristics of subsidence.The results of analysis show the annual average settlement deformation velocity of Langfang area is variable within the range of-17.9 mm/a~8.5mm/a in the monitoring period;there exists obvious settlement funnel at Nanjianta Town of Guangyang District;the maximum annual average settlement velocity is-60.4mm/a;the maximum cumulative settlement is-107.6mm;the main causes for surface subsidence in Langfang area are overexploitation of groundwater and rapid development of urbanization.

关 键 词：地表沉降 SBAS-InSAR 时空分析 廊坊地区 

分 类 号：P237[天文地球—摄影测量与遥感]