高海拔地区大坝变形位移数据处理的关键技术研究  

Research on the Key Techniques of Dam Deformation and Displacement Data Processing in High Altitude Area

作　　者：杨佩 汪过兵 YANG Pei;WANG Guobing(Gansu Power Investment Jiudianxia Hydropower Development Co.,Ltd.,Dingxi Gansu 730050,China;Institute of Geotechnical Engineering,Xi′an University of Technology,Xi′an Shaanxi 710048,China)

机构地区：[1]甘肃电投九甸峡水电开发有限责任公司,甘肃定西730050 [2]西安理工大学岩土工程研究所,陕西西安710048

出　　处：《甘肃科技纵横》2024年第4期66-72,共7页Scientific & Technical Information of Gansu

摘　　要：高海拔地带,气象条件的变化会导致空气折射率发生变动,从而显著降低大坝安全监测的精确度。为了解决高海拔地带气象条件变化对大坝安全监测精确度的影响,利用徕卡TC1201全站仪观测九甸峡某大坝的变形位移,提出了一套新的数据处理方法,用于高海拔、温湿度变化显著的地区,旨在实现大坝观测位移测量数据的高精度处理。研究综合应用了气象改正公式和边长改正公式,并通过对比分析人工计算与全站仪自动计算的结果,发现经过改正后的数据更为接近基准值。这一重要发现不仅解决了高海拔、温湿度变化较大地区大坝变形位移数据处理中误差大的技术难题,而且为今后类似工程提供了借鉴经验,也为相关领域的技术进步贡献了力量。At high altitudes,changes in meteorological conditions can lead to changes in air refractive index,which significantly reduces the accuracy of dam safety monitoring.In order to solve the influence of the change of meteorological conditions on the accuracy of dam safety monitoring at high altitudes,an innovative data processing method is proposed based on the observation of dam deformation and displacement using the Leica TC1201 total sta-tion in Jiudianxia.which is applied to the area with high altitude and significant temperature and humidity changes,aiming to realize high-precision processing of dam observation and displacement measurement data.The meteoro-logical correction formula and edge length correction formula are comprehensively applied,and through compara-tive analysis of the results of manual calculation and automatic calculation by total stations,it was found that the cor-rected data is closer to the reference value.This important discovery not only solves the technical problem of large errors in the processing of dam deformation displacement data in high-altitude and areas with significant tempera-ture and humidity changes,but also provides valuable reference experience for similar projects in the future and contributes to the technological progress in related fields.

关 键 词：大坝表面位移 气象改正 斜距改平 坐标正反算 

分 类 号：TV698[水利工程—水利水电工程]