多重分形消除趋势分析法在坝体渗漏量监测中的应用  

Application of MF-DFA in Dam Leakage Monitoring

作　　者：周斌 李元芳 王雪[3] 周杰[4] 

机构地区：[1]临沧市水利水电勘测设计研究院,云南临沧677000 [2]景谷县水务局,云南景谷666400 [3]浙江同济科技职业学院,浙江杭州310000 [4]中国水利水电科学研究院工程抗震中心,北京100038

出　　处：《水电能源科学》2014年第7期83-85,共3页Water Resources and Power

基　　金：国家重点实验室专项经费项目(2010585212);江苏省"333高层次人才培养工程"项目(2017-B08037)

摘　　要：针对混凝土重力坝渗漏量原始监测序列的趋势性波动对整个大坝安全监测序列不同时段间的时程相关性产生的影响,以某水电站大坝为例,采用多重分形消除趋势分析法(MF-DFA)确定整个大坝安全监测序列不同时段间的时程相关性,并分别计算每年坝体渗流量监测的定标指数,与相应的坝体渗漏量过程线进行对比分析,以验证MF-DFA在确定坝体渗漏监测序列时程相关性中的可行性。结果表明,该方法具有一定的精度和合理性,为后续建模计算提供了理论依据。Abstract; Aiming at the impact of trend fluctuation of original monitoring sequence of concrete gravity dam＇s leakage on the correlation of different time period, taking a certain hydropower station dam as an example, multi-fractal MF-DFA is used to determine the time-history correlation of the dam safety monitoring sequence among different time periods. And then the calibrated exponential of dam leakage monitoring in each year is calculated. Compared with the corresponding process line of dam leakage, it verifies the feasibility of the MF-DFA in use of time-history correlation of dam leakage monitoring series. The results show that the proposed method has considerable precision and rationality, which provides a theoretical basis for the subsequent modelling calculation.

关 键 词：坝体渗漏量 时程相关性 多重分形消除趋势分析 时间序列 

分 类 号：TV698.1[水利工程—水利水电工程]