面板堆石坝接缝位移的自动监测及分析  

The Automatic Monitoring and Analysis on the Joint Concrete Displacement in the Face Rockfill Dam

作　　者：尚剑宝 

机构地区：[1]山西水利水电勘测设计研究院,太原030024 [2]山西唐河水电有限责任公司,太原030002

出　　处：《太原理工大学学报》2015年第4期470-473,479,共5页Journal of Taiyuan University of Technology

基　　金：山西省国际合作项目(2013081034);山西省水利厅水利技术项目研究与推广项目(201433;03011427)

摘　　要：阐述了对振弦式测缝计及其三向位移计算原理,以山西某水电站接缝处的监测数据为基础分析,发现蓄水前和蓄水期由于主要影响因素不同,接缝处的变化情况也不同;通过线性回归模型,预测测点三个方向位移变化趋势,在x、y方向主要受温度的影响,z方向主要受水压的影响,且随着水位的上升而变,相比安装后z方向的位移变化减小,反映大坝运行稳定。研究结论在一定程度上对面板坝接缝位移实际趋势变化做参照分析。With on the vibrating string type joint meter, three direction displacement calcula- tion principle,and the monitoring data of Shanxi hydropower station joint as a basis for analysis, it was found that before water storage and storage period the main influence factors are different, changes of joints are also different. The linear regression model was adopted to predict the chan- ging trend of measuring points in three directions. The x direction and y direction changed are mainly a affected by temperature,and the changes are predicted for different time in a day. z direc- tion change is mainly affected by water pressure, and changing with the rise of water level. The reduction of the displacement in z direction reflects the dam stability. The prediction results and conclusions provide some guide on the displaceuent prediction of the actual joint of the dam.

关 键 词：振弦式测缝计 三向位移计算 面板缝隙 实时监测 回归模型 

分 类 号：TV522[水利工程—水利水电工程]