利用时序InSAR技术开展大型调水工程变形监测

Deformation Monitoring of Large-scale Water Diversion Project Using Time Series InSAR Technology

为解决水资源空间分布不均问题,我国建设实施了南水北调等一系列调水工程项目。为确保调水工程的安全运行,有必要对调水工程基础设施进行变形监测。基于2016—2022年Sentinel-1数据,利用时序InSAR技术对华北平原某大型调水工程进行变形监测,提取其沿线和周边地表形变信息,识别潜在变形区域,分析时空演化趋势,并讨论沿线输水建筑物的稳定性。结果表明,该调水工程穿过两个沉降漏斗,沉降整体减缓,局部地区沉降趋于稳定,甚至小部分区域出现轻微抬升。研究结果证明了InSAR技术在大型调水工程变形监测中的作用和优势,可为调水工程安全运行提供可靠的技术保障。

In order to solve the problem of uneven spatial distribution,a series of water diversion projects were constructed,such as south-to-north water diversion project.In order to ensure the safe operation of water diversion projects,it is necessary to conduct deformation monitoring on the infrastructure of water diversion projects regularly.In this paper,based on the Sentinel-1 data from 2016 to 2022,we used the time series InSAR technology to monitor the deformation of a large water diversion project in the North China plain,extracted the surface deformation information along and around the project,identified potential deformation areas,analyzed the spatio-temporal evolution trend,and discussed the stability of water diversion structures along the project.The results show that the water diversion project passes through the two settlement funnels,the settlement slows down overall and stops in some areas,and even a small part of the area appears slight uplift.The result can prove the role and advantage of InSAR technology in deformation monitoring of large-scale water diversion project,which can provide reliable technical support for safe operation.