摘要
评判水工建筑物的工作性态,需高精度的变形、应力等信息。根据大坝安全监测特点和要求,介绍GBSAR监测系统构成和测量基本原理,分析该系统测量误差来源及特征,探讨该技术在大坝变形监测中的可行性。以隔河岩大坝3d的实测数据为例,分析该技术实际测量精度,研究显示成果达亚毫米级,能够满足大坝变形监测的精度要求。
In order to evaluate the working behaviour of hydraulic structure,the deformation and stress information concerning its high precision are needed.In this paper,according to the characteristics and requirements of the dam safety monitoring,the constitution and the basic principle of measurement of the GBSAR monitoring system have been introduced.The measurement error sources and characteristics of the system have been analyzed.The feasibility of GBInSAR technology used in dam deformation monitoring has been discussed.By taking the measured data during three days of Geheyan dam as an example,it analyzes the actual measurement precision of the technology can reach millimeter level,and the technology can meet the accuracy requirement of the dam deformation monitoring.
出处
《测绘工程》
CSCD
2017年第2期62-65,共4页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(41174002)
湖南省重点实验室开放研究基金资助项目(PKLHD201311)
中央高校基本科研业务费项目(2013/B14020383)
