基于SBAS-InSAR技术的关州水电站区域地表形变监测及成因分析  

Surface Deformation Monitoring and Analysis in the Guanzhou Hydropower Station Area Based on SBAS-InSAR Technology

作　　者：贾洁琼 廖鑫 王立娟 唐尧[1,3] 廖军 JIA Jieqiong;LIAO Xin;WANG Lijuan;TANG Yao;LIAO Jun(Major Hazard Sources Measurement and Control Key Laboratory of Sichuan Province,Chengdu,Sichuan 610045,China;Sichuan Anxin Kechuang Technology Co.,Ltd.,Chengdu,Sichuan 610045,China;Sichuan Academy of Safety Science and Technology,Chengdu,Sichuan 610045,China)

机构地区：[1]重大危险源测控四川省重点实验室,四川成都610045 [2]四川安信科创科技有限公司,四川成都610045 [3]四川省安全科学技术研究院,四川成都610045

出　　处：《水利与建筑工程学报》2025年第2期106-112,133,共8页Journal of Water Resources and Architectural Engineering

基　　金：四川省科技厅重点研发项目(2024YFFK0111);四川省重点研发计划项目(2023YFS0411);四川省科技厅重点研发项目(2023YFS0432)。

摘　　要：针对关州水电站位于地质条件复杂区,水工建筑及周边区域受季节性降雨、水库水位波动及人类活动影响,易发生地基沉降、边坡滑动等地质灾害问题,采用小基线集合成孔径雷达干涉测量技术(Small Baseline Subset Interferometric Synthetic Aperture Radar,SBAS-InSAR),利用102景Sentinel-1A升、降轨数据,对关州水电站厂房枢纽及周边区域2021年至2022年的地表形变进行监测。结果表明,升轨数据识别出不稳定形变区6处,降轨数据识别出4处;不稳定形变区形变速率、累积形变量呈季节性变化,每年10月至次年4月处于相对稳定状态,形变速率较小,5-9月进入汛期后,受降雨影响,形变速率逐渐增大,开始处于不稳定状态。研究结果有助于了解厂房枢纽等水工建筑及周边区域地表形变的变化趋势,可及时发现潜在事故灾害及隐患。The Guanzhou Hydropower Station is located in a geologically complex area where hydraulic structures and surrounding regions are prone to geological hazards such as foundation settlement and slope sliding due to seasonal rainfall,reservoir water-level fluctuations,and human activities.High-precision surface deformation monitoring is urgently required for stability analysis.Using The Small Baseline Subset Interferometric Synthetic Aperture Radar(SBAS-InSAR)technology,this work analyzed surface deformation in the power station's powerhouse hub and adjacent areas from 2021 to 2022 by employing 102 ascending and descending track Sentinel-1A datasets.The results revealed that the ascending track data identified six unstable deformation zones,while the descending track data detected four.The deformation rates and cumulative displacements in these unstable zones exhibited seasonal variations.They remained relatively stable with minor deformation rates from October to April annually,but entered an unstable state with gradually increasing deformation rates during the flood season(May to September)due to rainfall impacts.These findings enhance the understanding of deformation trends in critical hydraulic structures and surrounding areas,aiding in the timely identification of potential hazards.

关 键 词：地表形变监测 小基线集合成孔径雷达干涉测量技术(SBAS-InSAR) 升降轨 关州水电站 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] TV72[自动化与计算机技术—控制科学与工程]