摘要
利用合成孔径雷达干涉(InSAR)技术研究南水北调保定至天津暗埋段的地表沉降。基于Sentinel-1数据,采用StackingInSAR、SBAS-InSAR、DS-InSAR三种算法获取该区域的形变结果;并通过比较各算法结果分析了其特点,证明了InSAR用于南水北调中线暗埋段地表沉降监测的效果。分析研究区形变特征发现两个明显的沉降漏斗段和一个短暂的地表抬升段,其中形变漏斗与地下水过度开采和建筑物导致土壤压实有关,而地表抬升则与当地降水量突增有关。
In this paper,we used the interferometric synthetic aperture radar(InSAR)technology to study the surface subsidence of buried section from Baoding to Tianjin of the South-to-North Water Transfer Project.Based on Sentinel-1 data,we used three algorithms,such as Stacking-InSAR,SBAS-InSAR,DS-InSAR to obtain the deformation results of study area.Then,we analyzed the characteristics by comparing the results of three algorithms,which could prove the effect of InSAR in the surface subsidence monitoring of buried section of the South-to-North Water Transfer Project.By analyzing the deformation characteristics of study area,we found two obvious subsidence funnel sections and one transient surface uplift section.The deformation funnels were related to groundwater overexploitation and soil compaction caused by buildings,while the surface uplift was related to the sudden increase in local precipitation.
作者
王鼎
郭际明
张春宇
许毅
史俊波
WANG Ding;GUO Jiming;ZHANG Chunyu;XU Yi;SHI Junbo(School of Resource and Environmental Science,Wuhan University,Wuhan 430079,China;Chongqing Institute of Surveying and Mapping Science and Technology,Chongqing 401120,China)
出处
《地理空间信息》
2025年第7期27-30,40,共5页
Geospatial Information
基金
自然资源部地质灾害智能监测与风险预警工程技术创新中心开放基金资助项目(TICGM-2023-06)。
关键词
时序InSAR
南水北调工程
地表沉降
形变分析
time series InSAR
the South-to-North Water Transfer Project
surface subsidence
deformation analysis
