融合角反射器InSAR监测水电工程控制网及边坡稳定  

Stability Monitoring of Control Network and Slope near Hydropower Station Integrating with Corner Reflector and InSAR

作　　者：侯春尧[1] 陈一鸣 张洪毅 雷洋 刘杰 李陶[4] HOU Chunyao;CHEN Yiming;ZHANG Hongyi;LEI Yang;LIU Jie;LI Tao(China Yangtze Power Co.,Ltd.,Yichang 443002,China;Changjiang Spatial Information Technology Engineering Co.,Ltd.,Wuhan 430010,China;National Dam Safety Research Center,Wuhan 430010,China;Global Navigation Satellite System(GNSS)Research Centre,Wuhan University,Wuhan 430079,China)

机构地区：[1]中国长江电力股份有限公司,湖北宜昌443002 [2]长江空间信息技术工程有限公司(武汉),湖北武汉430010 [3]国家大坝安全工程技术研究中心,湖北武汉430010 [4]武汉大学卫星导航定位技术研究中心,湖北武汉430079

出　　处：《地理空间信息》2025年第2期103-107,共5页Geospatial Information

基　　金：国家自然科学基金资助项目(U2340228);国家自然科学基金面上项目(42074031);三峡金沙江川云水电开发有限公司永善溪洛渡电厂科研项目(4122020011)。

摘　　要：传统测绘手段受制于坝区地形和气象条件复杂,使得水电工程控制网稳定性评估复测的周期长、成本高,且对库岸边坡变形监测的时效性不足。通过在近坝区的水电工程控制网点附近布设人工角反射器,并利用高分辨率SAR卫星时序分析技术进行观测,结果显示利用角反射器可实现精度为2~3 mm每月一期的控制网点状态评估。利用SBAS-InSAR时序分析技术对坝区内多个滑坡体的变形信号进行了提取,并开展了形变演化过程分析,结果表明提出的结合角反射器和InSAR技术的水电工程控制网基准点稳定性监测方法,为大坝安全监测基准评估提供了新技术手段,可大幅提升电厂安全运营的技术水平并降低人工观测频次。随着国产SAR卫星的进一步成熟,该技术有望能够实现自主可控的水电工程基准网稳定性评估和无人化的坝区滑坡变形安全监测。Traditional surveying and mapping techniques are constrained by the complexity of topography and meteorological conditions near the hydropower station area,which makes the stability assessment retesting of hydropower project control network long and costly,and the timeli-ness of deformation monitoring of reservoir bank slopes is insufficient.By deploying artificial corner reflectors near the control nodes of hydro-power projects in the near-dam area and using high resolution SAR satellite time-series analysis techniques for observation,the results showed that the use of corner reflector can achieve an accuracy of 2~3 mm and a twice-monthly assessment of the state of control nodes.We used SBAS-InSAR time-series analysis technology to extract the deformation signals of several landslides in the dam area,and analyzed the deforma-tion evolution process.The stability monitoring method of hydropower engineering control network reference point combined with corner reflec-tor and InSAR technology proposed in this paper provides a new technical means for dam safety monitoring benchmark assessment,significantly improves the technical level of power plant safety operation and reduces the frequency of manual observation.With the further maturation of domestic SAR satellites,the technology is expected to be able to realize autonomous and controllable stability assessment of hydropower engi-neering benchmark networks and unmanned safety monitoring of landslide deformation in dam areas.

关 键 词：INSAR 人工角反射器 水电工程 控制网 时间序列 边坡 

分 类 号：P231[天文地球—摄影测量与遥感]