摘要
爆破震动效应测试和分析对于评估工程爆破安全和爆破效果非常重要,但对于采集到的爆破震动信号,在数据的处理和分析上还存在着诸多不足。在阐释小波变换基本原理的基础上,给出了爆破震动信号能量分析方法的理论解析,并结合应用实例,对爆破震动信号进行小波包能量分解。研究结果表明,基于小波包变换的能量分析方法可以较好地揭示信号在不同频带范围内的局部分布特征,从而为可靠地进行建(构)筑物爆破震动效应安全评估奠定理论基础。
The test and analysis of blasting vibration effects play an important part in the assessment of blasting safety and effect, but there are still many inadequacies in the data processing and analysis for the blasting vibration signals collected. On the basis of interpretation of the basic principles of wavelet transform, theoretical explanation of energy analysis method is given and the wavelet packet energy decomposition of an example of blasting vibration signal is carried out. The results show that wavelet packet energy decomposition method can better reveal the partial characteristics in different frequency bands of the signal and lay the theoretical basis for reliable assessment to construction blasting vibration response.
出处
《大地测量与地球动力学》
CSCD
北大核心
2010年第B11期27-30,62,共5页
Journal of Geodesy and Geodynamics
基金
中国地震局地震研究所所长基金(IS200956050)
关键词
爆破震动
信号分析
小波包分解
频带
能量分析
blasting vibration
signal analysis
wavelet packet decomposition
frequency band
energy analysis
