基于HHT方法在英坪矿Ⅱ号坑的爆破振动分析
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摘要
HHT(希尔伯特-黄变换)是一种全新而优越的分析与处理非平稳信号的时频方法,它具有自适应性强、高效等特点。它由EMD和Hilbert变换两部分组成,其Hilbert能量谱可清晰地表明能量随时频分布的特点。本文利用HHT方法分析了瓮福磷矿英坪矿区Ⅱ号坑露天爆破所获得的爆破振动数据,探讨了英坪矿Ⅱ号坑爆破振动的时频特征,为该矿下阶段安全生产提供依据。
HHT(Hilbert-Huang Transform) is a brand-new and superior time-frequency method to analyze and process non-stationary signals.It has high self-adaptation and good efficiency.It consists of two parts,EMD and Hilbert.Energy spectrum of Hilbert can clearly indicate the energy distribution with time frequency.The blasting vibration data collected by open blasting of No.2 pit in Yingping Mine Area of Wengfu Phosphate Rock were analyzed with the method of HHT.Time-frequency features of blasting vibration were discussed,which provided a safe production experience for the next stage of the mine.
HHT(Hilbert-Huang Transform) is a brand-new and superior time-frequency method to analyze and process non-stationary signals.It has high self-adaptation and good efficiency.It consists of two parts,EMD and Hilbert.Energy spectrum of Hilbert can clearly indicate the energy distribution with time frequency.The blasting vibration data collected by open blasting of No.2 pit in Yingping Mine Area of Wengfu Phosphate Rock were analyzed with the method of HHT.Time-frequency features of blasting vibration were discussed,which provided a safe production experience for the next stage of the mine.
引文
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[8]张义平,李夕兵,赵国彦.基于HHT方法的爆破地震信号分析[J].工程爆破,2005,11(1):1-7.
[9]林大超,施惠基,白春华,等.爆炸地震效应的时频分析[J].爆炸与冲击,2003,23(1):31-35.
[10]凌同华,李夕兵.地下工程爆破震动信号能量分布的小波包分析[J].爆炸与冲击,2004,24(1):63-68.
[2]Huang N E.A New Viewof Earthquake Ground MotionData:the Hilbert Spectral Analysis[A].Proc.of Int.Workshop on Annual Commemoration of Chi-Chi Earth-quake[C].Eds.Loh C Hand Liao WI.2000.Ⅱ:64-75.
[3]Loh C H,Wu T S,Huang N E.Application of EMD+HHT Method to Seismic Response Data of BuildingStructure[A].Proc.of Int.Workshop on Annual Com-memoration of Chi-Chi Earthquake[C].Loh C HandLiao WI.2000.Ⅱ:270-281.
[4]张义平,李夕兵.Hilbert-Huang变换在爆破震动信号分析中的应用[J].中南大学学报,2005,36(5):882-887.
[5]张义平,李夕兵,左宇军.爆破振动信号的HHT分析与应用[M].北京:冶金工业出版社,2008.
[6]Daubechies I.The Wavelet Transform,Ti me-frequencyLocalization and Signal Analysis[J].IEEE Transactionson Information Theory,1990,36(5):961-1005.
[7]李夕兵,张义平,刘志祥,等.爆破震动信号的小波分析与HHT变换[J].爆炸与冲击,2005,25(6):528-535.
[8]张义平,李夕兵,赵国彦.基于HHT方法的爆破地震信号分析[J].工程爆破,2005,11(1):1-7.
[9]林大超,施惠基,白春华,等.爆炸地震效应的时频分析[J].爆炸与冲击,2003,23(1):31-35.
[10]凌同华,李夕兵.地下工程爆破震动信号能量分布的小波包分析[J].爆炸与冲击,2004,24(1):63-68.
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