古田溪四级大坝坝顶垂直位移突变成因分析  

Cause Analysis of Vertical Displacement Mutation of Gutianxi Dam Ⅳ

作　　者：何金平[1,2] 施玉群[1,2] 卢秋生 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北省武汉市430072 [2]武汉大学水利水电学院,湖北省武汉市430072 [3]华电福建发电有限公司古田溪水力发电厂,福建省古田县352258

出　　处：《水电自动化与大坝监测》2010年第1期53-56,共4页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：古田溪四级大坝坝顶垂直位移存在着几次明显的突变现象,从垂直位移与环境变量的相关性分析、垂直位移与其他监测效应量的对比分析以及建立垂直位移统计模型等多个角度,对垂直位移产生突变的可能成因进行了研究。研究表明,突变与环境变量的变化无明显相关性,与坝址地震、工作基点稳定性等关系不大,不能反映坝体及坝基出现结构变异,最可能的原因为观测误差。The vertical displacement of Gutianxi Dam Ⅳ has several obvious mutations. In this paper, possible causes of the vertical displacement mutation are studied from multiple points of view, such as analysis of correlation between vertical displacement and environmental variables, comparative analysis on vertical displacement and other monitored effect quantities, as well as the establishment of statistical models of vertical displacement. Study shows that vertical displacement mutations of Gutianxi Dam Ⅳ have no significant correlation with the changes of environmental variable, have little to do with dam site earthquake and working point stability, and it cannot reflect the structural variation in dam and its foundation, indicating that the most likely cause is the observation error.

关 键 词：大坝 垂直位移 突变 统计模型 成因分析 

分 类 号：TV698.11[水利工程—水利水电工程] TV223.31