人民长江2024，Vol.55Issue(7)：247-253,7.DOI:10.16232/j.cnki.1001-4179.2024.07.032
基于磁通测量的大坝水平位移监测方法研究
Research on horizontal displacement monitoring method for dams based on magnetic flux measurement
摘要
Abstract
Vertical line measurement technology has been widely used in dam horizontal displacement monitoring because of its simplicity and effectiveness.However,facing the high humidity and high dust monitoring environment,traditional monitoring meth-ods have certain limitations.Therefore,a method of dam horizontal displacement monitoring based on magnetic flux measurement was proposed.In this method,based on the principle that magnetic flux is not affected by non-ferromagnetic medium,taking mag-netic flux as medium,the displacement change was converted into the voltage change of magnetic sensor by constructing appropri-ate magnetic circuit.According to the actual demand,a differential flux measurement sensor was designed to weaken the influence of background magnetic field,and the data fitting method of iterative calibration was used to improve the fitting accuracy.Com-bined with theoretical analysis and laboratory test,a magnetic flux measurement vertical coordinate instrument suitable for high hu-midity and high dust environment,with an accuracy of 0.1 mm,was developed,and then was used in Baihetan Hydropower Sta-tion.The experimental and field application results showed that the method of dam horizontal displacement monitoring based on magnetic flux measurement was feasible,and the magnetic flux measurement vertical coordinate instrument is in good operation at the site of hydropower stations.关键词
磁通测量/水平位移/安全监测/霍尔传感器/高湿度Key words
magnetic flux measurement/horizontal displacement/safety monitoring/Hall sensor/high humidity分类
建筑与水利引用本文复制引用
房宽达,张继楷,姚孟迪,于琦,高潮..基于磁通测量的大坝水平位移监测方法研究[J].人民长江,2024,55(7):247-253,7.基金项目
国家自然科学基金青年基金项目(52209153) （52209153）
中国长江三峡集团有限公司科研项目(202103471) （202103471）
中国三峡建工(集团)有限公司科研项目(JGAJ0302222001) （集团）
