PS-InSAR技术在凉水河通州段堤防与水闸沉降监测中的应用分析
Application analysis based on PS-InSAR technology in the monitoring of levee and sluice settlement monitoring of Liangshui River
王靖雯 1赵晓维1
作者信息
- 1. 北京市凉水河管理处 北京 100069
- 折叠
摘要
北京市汛期降水量占全年降水量的85％,降水与洪涝是威胁水闸和堤防安全的重要因素,汛期水闸与堤防衔接处易发生险情.基于PS-InSAR技术对凉水河通州段3座大型水闸及其临近堤防进行监测,分析汛期水闸及临近堤防的平均沉降速率及累计垂直位移量,结果表明:最大堤防累计位移量为50.20 mm,最大水闸累计位移量为45.30 mm,研究区域总体处于沉降状态,堤防与水闸沉降变形趋势基本一致,区域沉降是主要原因.运用GNSS作为辅助手段,对PS-InSAR测点精度进行验证,两者反映水闸与堤防的垂直位移趋势基本相同.PS-InSAR技术可作为水闸与堤防等水工建筑物群沉降监测的辅助技术手段进一步推广应用.
Abstract
The precipitation in flood season accounts for 85％of the annual precipitation in Beijing.Pre-cipitation and flood are significant factors threatening the safety of sluice and dike,leading to potential hazardous situations at their junctions.Based on PS-InSAR technology,three large sluices and their adja-cent levees in Tongzhou section of Liangshui River were monitored,and the average settlement rate and cumulative vertical displacement of sluices and adjacent levees in flood season were analyzed.The results show that the maximum cumulative displacement of levee is 50.20 mm,and the maximum cumulative dis-placement of sluice is 45.30 mm.The study area is in the overall settlement state,and the settlement de-formation trend of levee and sluice is basically the same,and the regional settlement is the main reason.GNSS is used as an auxiliary means to verify the accuracy of PS-InSAR measurement points.The vertical displacement trends of sluice and dike are basically the same.PS-InSAR technology can be used as an auxiliary technology to monitor the settlement of hydraulic structures such as sluice and dike.
关键词
PS-InSAR/沉降监测/堤防/水闸/凉水河Key words
PS-InSAR/settlement monitoring/levee/sluice/Liangshui River引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据