大坝视准线与真空激光观测值的衔接回归分析  

Regression Analysis of Dam Observations Which Link Up the Collimating Line with the Vacuum Laser

作　　者：罗文广 胡升伟 文聘[3] 胡明秀 

机构地区：[1]四川蜀禹水利水电工程设计有限公司,四川成都610072 [2]中国水电顾问集团成都勘测设计研究院,四川成都610072 [3]四川省电力设计院,四川成都610072

出　　处：《人民黄河》2018年第1期118-122,共5页Yellow River

摘　　要：某水电站大坝水平位移2000年前采用视准线法监测,2000年后采用真空激光准直系统监测,但这两种方法观测成果存在空间和时间上的相对性,因此对该水电站水平位移2000年前后各自的数据进行分析,然后选择代表性测点尝试将二者衔接起来展现连续的水平位移变化过程和趋势。各系列测值回归复相关系数为0.71~0.97,标准差为0.41~2.42 mm,标准差与变幅比值为0.03~0.16;总体上水压分量占比(36%)大于温度分量的(18%),且初蓄期水压激增的效应也突出显现,温度效应变幅为4~5 mm,时效分量变幅呈收敛趋势,回归效果总体尚可。Dam horizontal displacement of one hydropower station is observed by collimating line method before 2000 and after 2000 by vacuum laser monitoring. Because the two observational results have the relativity in space and time,thus,the paper analyzed the horizontal displacement data of the hydropower station before and after 2000 and then selected the representative measuring point to attempt to link up the two for showing a continuous process of horizontal displacement and trend. The measured values of each series after linking up,the regression correlation coefficient are between 0.71 and 0.97,the standard deviation are between 0.41 mm and 2.42 mm,with the amplitude ratio between 0.03 and 0.16. In general,the hydraulic factor( 36%) is greater than that of the temperature factor( 18%),and the water pressure surge effect of the early accumulation also highlight show. Temperature effect ranged from 4 ~ 5 mm and the time factor is a convergence trend.Therefore,the law of each component of decomposition is accord with the characteristics of the dam and the overall effect of the regression is acceptable.

关 键 词：视准线法 真空激光准直系统 水平位移 监测 回归分析 大坝 

分 类 号：TV642.3[水利工程—水利水电工程]