小波包分析在大坝变形监测中的应用
Application of wavelet packet analysis in dam deformation monitoring
黄峰1
作者信息
- 1. 广东省地质局第七地质大队,广东 惠州 516300
- 折叠
摘要
为了更好地分析大坝在外界环境及自身振动下的变形状态,利用小波包分析在信号处理领域中的优势,将小波包分析应用于大坝变形监测数据处理中.首先对小波包的理论进行了介绍,然后研究并确定了实现监测数据小波包分析中的各种参数,如最优分解层次、最优小波包基及最优阈值估计准则,最后使用频谱分析对大坝监测数据进行频率分段,得到不同频段的频率及对应振幅,进一步分析了大坝的变形特征.
Abstract
In order to better analyze the deformation status of dams under external environment and self vibration,the advantages of wavelet packet analysis in the field of signal processing are utilized to apply wavelet packet analysis to the data processing of dam deformation monitoring.Firstly,the theory of wavelet packet was introduced.Secondly,various parameters for implementing wavelet packet analysis of monitoring data were studied and determined,such as the optimal decomposition level,optimal wavelet packet basis,and optimal threshold estimation criteria.Finally,spectral analysis was used to segment the frequency of dam monitoring data,obtain the frequencies and corresponding amplitudes of different frequency bands,and further analyze the deformation characteristics of the dam.
关键词
小波包分析/大坝变形/去噪Key words
wavelet packet analysis/dam deformation/denoising引用本文复制引用
出版年
2024
NETL
NSTL
万方数据