某混凝土坝位移观测资料分析

Analysis of displacement observation data of a concrete dam

根据某混凝土坝2013—2019年的位移观测资料,在定性分析坝顶水平位移变化规律及其各影响分量的基础上,进一步分析了测量数据可靠性,构建了位移观测值的逐步回归模型,定量研究了上游水位、温度、时效分量的影响,并对比了引张线自动化测值与视准线人工测值,分析其差异性原因,为大坝位移性态评价提供参考。

According to the displacement observation data of a concrete dam from 2013 to 2019,based on the qualitative analysis of the variation law of dam crest horizontal displacement and its various influ⁃ence components,the reliability of observation data is further analyzed,the stepwise regression model of displacement observation values is constructed,and the impact of the upstream water level,temperature and time effect is quantitatively studied.In addition,the automated measurement by tension wire align⁃ment is compared with the manual measurement by collimation line,and the reason for their differences is analyzed,providing reference for the evaluation of dam displacement behavior.