时序InSAR地面沉降时空分布研究  

Temporal and spatial distribution of land subsidence by time sequence InSAR

作　　者：宋佳 刘耀鹏 兰进京 SONG Jia;LIU Yaopeng;LAN Jinjing(Henan Hongtai Surveying and Mapping Engineering Co.,Ltd.,Zhengzhou,Henan 450000,China;No.2 Institute of Geological&Mineral Resources Survey of Henan,Zhengzhou,Henan 450001,China)

机构地区：[1]河南鸿泰测绘工程有限公司,河南郑州450000 [2]河南省第二地质矿产调查院有限公司,河南郑州450001

出　　处：《测绘技术装备》2024年第3期14-18,共5页Geomatics Technology and Equipment

基　　金：国家自然基金项目(41975036,42075132,41601364,42041004);智慧中原地理信息技术协同创新中心项目(2020C002);中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2018-03)。

摘　　要：为解决传统差分合成孔径雷达干涉测量(D-InSAR)观测方法易受时空失相干和大气效应制约的潜在问题,本文分析了小基线集-合成孔径雷达干涉测量(SBAS-InSAR)技术的原理及地面沉降观测的可行性与精度,并以焦作修武县为例,提取了2020―2022年的城市地表形变影像,设计了数据处理技术流程,获取了研究区地面沉降的时空分布。结果表明,靠近山地及采空区的地面沉降较为严重,年均沉降速率最大可达230 mm/a;受矿采影响,研究区周边地区相继出现沉降漏斗,累积最大沉降量为516 mm。此外,本文通过对城市地面沉降进行监测,分析了城市类型及周边地质环境,并对地面沉降成因进行了探讨,通过与其他常用观测方法进行对比分析,证明了该方法具有野外工作效率高和生产成本低等优势。In order to breakthrough the limitation by the incoherence of space and time and the atmospheric effect from traditional D-InSAR observation method,this paper analyzes the principles of SBAS-InSAR technology and the feasibility and accuracy of land subsidence observation by taking technical process of Xiuwu County in Jiaozuo City as an example.The urban surface deformation images from 2020 to 2022 were extracted,and the data processing process was designed to obtain the temporal and spatial distribution of land subsidence in the study area.The results show that the land subsidence near the mountain and goaf area is more serious,and the average annual subsidence rate is up to 230 mm/a.Under the influence of mining,subsidence funnels appeared in the surrounding areas of the study area,and the maximum accumulated subsidence was 516 mm.Based on the monitoring of urban land subsidence,this paper further analyzes the urban type and surrounding geological environment,and discusses the causes of land subsidence.It is proved that this method has the advantages of high field work efficiency and low cost by comparing and analyzing with other commonly used observation methods.

关 键 词：时序分析 InSAR短基线集 地表形变监测 矿山地质环境 

分 类 号：P258[天文地球—测绘科学与技术]