摘要
【目的】为保障南水北调中线工程的安全运行,需监测其渠道表面形变情况。【方法】基于2019年12月至2020年12月74景Sentinel-1A数据,采用SBAS-InSAR技术,对南水北调河南段进行形变普查;引入TerraSAR-X升、降轨各15景数据,利用DS-InSAR技术,对河南长葛段进行多平台InSAR三维形变精确探测。【结果】南水北调河南段存在22处明显形变区,最大形变速率为-98 mm/年,其中长葛段1.6 km渠道沉降超限明显,水磨河村附近渠道和禹州坤成煤矿附近均存在明显沉降漏斗,最大形变速率分别达-26、-40 mm/年,前者仅存在垂直向形变,后者存在垂直向和东西向双向形变。【结论】将水磨河村附近渠道垂直向形变结果与二等水准数据进行对比验证,发现垂直向形变与二等水准数据变化趋势基本相同,最大误差不超过±2 mm,精度可靠,可为InSAR三维形变监测在水利工程灾害预警和防治方面提供理论和技术支撑。
【Objective】To ensure the safe operation of the Middle Route of South-to-North Water Diversion Project,it is necessary to monitor channel surface deformation.【Methods】Based on 74 Sentinel-1A images from December 2019 to December 2020,SBAS-InSAR technology was applied to conduct a comprehensive survey of deformation in Henan section of South-to-North Water Diversion Project.Additionally,15 ascending and 15 descending TerraSAR-X images were integrated using DS-InSAR technology for precise multi-platform InSAR detection of three-dimensional deformation in Henan Changge section.【Results】Twenty-two significant deformation zones were identified along Henan section,with a maximum deformation rate of-98 mm/year.Notably,a 1.6 km channel segment in Changge exhibited excessive settlement.Settlement funnels were observed in the channel near Shuimohe Village and Kuncheng Coal Mine in Yuzhou,with peak deformation rates reaching-26 mm/year and-40 mm/year,respectively.The former showed only vertical deformation,while the latter displayed both vertical and east-west bidirectional deformation.【Conclusion】Verification against second-order leveling data confirms that vertical deformation of the channel near Shuimohe Village aligns closely with leveling trends,with a maximum error of±2 mm,indicating reliable accuracy.This provides theoretical and technical support for the application of InSAR threedimensional deformation monitoring in disaster early warning and prevention in hydraulic engineering.
作者
刘辉
李世环
苗长伟
周泊辰
张宇
李世烜
LIU Hui;LI Shihuan;MIAO Changwei;ZHOU Bochen;ZHANG Yu;LI Shixuan(Advanced Research Institute for Digital-Twin Water Conservancy,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;School of Surveying and Geo-Informatics,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;China Nuclear Industry Survey Design&Research Co.,Ltd.,Zhengzhou 450003,China)
出处
《华北水利水电大学学报(自然科学版)》
北大核心
2025年第5期1-13,共13页
Journal of North China University of Water Resources and Electric Power:Natural Science Edition
基金
国家自然科学基金项目(41901411)
河南省高等学校青年骨干教师培养计划项目(2021GGJS073)
河南省科技攻关项目(212102310052)
中央引导地方科技发展资金资助(2025ZYDF033)。
