谷坡GNSS监测点高高程部位垂直位移误差较大原因分析  

Analysis on the Causes of Large Vertical Displacement Error in High Elevation of GNSS Monitoring Points in Valley Slopes

作　　者：王利新 柏金川 刘通 胡航 宋明富 闵四海 WANG Lixin;BO Jinchuan;LIU Tong;HU Hang;SONG Mingfu;MIN Sihai(Yalong River Hydropower Development Co.,Ltd.,Chengdu Sichuan 610051;Sichuan Zhongshui Chengkanyun Surveying&Mapping Engineering Co.,Ltd.,Chengdu Sichuan 400061)

机构地区：[1]雅砻江流域水电开发有限公司,四川成都610051 [2]四川中水成勘院测绘工程有限责任公司,四川成都400061

出　　处：《四川水力发电》2025年第1期154-157,163,共5页Sichuan Hydropower

摘　　要：传统的大地测量方式存在的问题主要有安全风险高、观测费用高和外观测量观测周期较长,无法及时反映水工建筑物工作性态和安全状态。相反,外部变形监测自动化系统(GNSS)可以提高监测效率、节约成本、降低安全风险和满足现代化与智能化需要,所以有必要对大坝外观变形观测进行自动化改造。某电站进行自动化改造后发现高高程部位监测数据与人工数据差值较大,通过对数据进行对比和统计学相关性分析发现:GNSS高程数据受日均温变化影响显著,与降雨量数据有中相关性,与库水位呈弱相关性。The problems of traditional geodetic survey are high safety risks,high observation costs and long observation period,which can not reflect the working behavior and safety state of hydraulic structure in time.On the contrary,the external deformation monitoring automation system(GNSS)can improve the monitoring efficiency,save costs,reduce safety risks and meet the needs of modernization and intelligence,so it is necessary to automate the dam appearance deformation observation.After the automatic reconstruction of a project,it is found that the difference between the monitoring data and the manual data is large.Through the comparison and statistical correlation analysis of the data,it is found that the GNSS high-elevation data is significantly affected by the change of daily temperature,and it has a moderate correlation with the rainfall data,and had a weak correlation with the reservoir water level.

关 键 词：大坝 变形监测 GNSS 监测网 

分 类 号：TU196.4[建筑科学—建筑理论]