摘要
为了解决抽水蓄能电站面临的单日水位变幅剧烈,大坝变形监测连续性、实时性差等问题,以深圳抽水蓄能电站工程为例,基于合成孔径雷达干涉测量和北斗大坝变形监测技术,通过InSAR历史数据分析,获得了近5 a内6座大坝及其库岸边坡的沉降场及沉降规律,搭建了北斗变形监测系统,分析了深圳抽蓄电站上库在前期运行过程中的大坝变形规律和变化趋势。结果表明:采用时序InSAR分析技术进行历史沉降分析结论合理有效,精度可达到毫米级,其中1号副坝最大累计变形达到22 mm;应用北斗技术实现了单点自动化三维变形监测,精度满足土石坝监测要求;两种监测手段为大坝安全分析评价和后续大坝安全监测方案优化提供了数据支撑,对其他抽蓄电站变形监测工作具有借鉴意义。
This paper addresses the issues faced by pumped storage power stations,such as severe daily water level fluctuations and poor continuity and real-time performance in dam deformation monitoring.Taking Shenzhen pumped storage power station as an example,based on synthetic aperture radar interferometry and Beidou dam deformation monitoring technology,the settlement field and settlement law of 6 dams and their bank slopes in the past 5 years are obtained through InSAR historical data analysis,and the Beidou deformation monitoring system is built;the deformation law and change trend of the dam in the early operation process of Shenzhen pumped storage power station are analyzed.The results show that the historical settlement analysis by using the time-series InSAR analysis technique is reasonable and effective,the accuracy can reach the millimeter level,and the maximum cumulative deformation of the No.1 auxiliary dam reaches 22 mm.The application of Beidou technology realizes single-point automatic three-dimensional deformation monitoring,and the accuracy meets the requirements of earth-rock dam monitoring.The two monitoring methods provide data support for the analysis and evaluation of dam safety and the optimization of subsequent dam safety monitoring design,and have reference significance for other pumped storage power station deformation monitoring.
作者
苏航
赵春
贾金生
龚春龙
丁廉营
SU Hang;ZHAO Chun;JIA Jinsheng;GONG Chunlong;DING Lianying(China Southern Power Grid Peak and Frequency Modulation Power Generation Co.,Ltd,Operation Branch,Guangzhou 511400,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;China National Committee on Large Dams,Beijing 100038,China;Shenzhen Xingdi Remote Sensing Technology Co.,Ltd.,Shenzhen 518000,China)
出处
《西北水电》
2024年第5期100-107,共8页
Northwest Hydropower
基金
国家重点研发计划(2018YFC1508502)
中国北斗卫星导航系统重大专项(GFZX030303020127).
