基于单段波形叠加的爆破振动信号时频分析
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摘要
基于实测的单段爆破振动信号,利用Matlab7.0编制程序在0～120ms内每隔单位毫秒进行两段波形叠加,研究不同微差间隔下的叠加信号振速峰值和主频的特征;并根据RSPWVD可以看作信号能量在时域和频域分布的明确的物理意义,从能量的角度探讨不同微差间隔下叠加信号的能量分布规律。结果表明:叠加信号降振率的最大值并非出现在单段爆破振动信号1/2周期的微差间隔处;叠加信号的主频不是连续变化的,具有一定的阶跃性,其持续时间随间隔时间的延长而增加;叠加信号的能量随着微差间隔延长具有明显的规律性,可尝试从能量的角度并考虑建(构)筑物对不同频率的选择放大作用对干扰降振进行研究。
Based on the measured single-stage blasting vibration signals,using Matlab7.0 programming,two-stages addition of waveforms was made in the 0 ～ 120 ms to study the vibration velocity peak value and the basic frequency characteristics of superposed in different millisecond intervals.Studied the energy distribution of blasting vibration signals in different millisecond intervals from the angle of energy,on the basis of that RSPWVD can be seen as energy of signals which distribution clear in time domain and frequency domain.The results show that the maximum value of the decreasing vibration rate of addition of waveforms really not present to millisecond intervals of single-stage blasting vibration signals 1 /2 cycle,the basic frequency has a certain stepped quality but not continuous changes,the duration is increased along with the interval time,addition of waveforms energy has obviously regularity along with the millisecond intervals extend.It can try studying the waveform resulting in vibration reduction that from angle of energy considering chooses-versterking of constructions to different frequency.
Based on the measured single-stage blasting vibration signals,using Matlab7.0 programming,two-stages addition of waveforms was made in the 0 ～ 120 ms to study the vibration velocity peak value and the basic frequency characteristics of superposed in different millisecond intervals.Studied the energy distribution of blasting vibration signals in different millisecond intervals from the angle of energy,on the basis of that RSPWVD can be seen as energy of signals which distribution clear in time domain and frequency domain.The results show that the maximum value of the decreasing vibration rate of addition of waveforms really not present to millisecond intervals of single-stage blasting vibration signals 1 /2 cycle,the basic frequency has a certain stepped quality but not continuous changes,the duration is increased along with the interval time,addition of waveforms energy has obviously regularity along with the millisecond intervals extend.It can try studying the waveform resulting in vibration reduction that from angle of energy considering chooses-versterking of constructions to different frequency.
引文
[1]宋光明,曾新吾,陈寿如,等.基于波形预测小波包分析模型的降振微差时间选择[J].爆炸与冲击,2003,23(2):163-168.Song Guangming,Zeng Xinwu,Chen Shouru,et al.The selection of millisecond delay interval of blasting for decreasing ground vibration based on the wavelet packets prediction model of waveforms[J].Ex-plosion and Shock Waves,2003,23(2):163-168.
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[9]蔡宗义,吴祖堂,王占江.地运动信号的时频分析[J].解放军理工大学学报,2007,8(5):546-550.Cai Zongyi,Wu Zutang,Wang Zhanjiang.Time-frequency analysis of ground motion signal[J].Journal of PLA University of Science and Technology,2007,8(5):546-550.
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[12]中国生,房营光,徐国元,等.基于小波包分析的建(构)筑物爆破振动安全判据研究[J].岩土工程学报,2009,31(2):223-228.Zhong Guosheng,Fang Yingguang,Xu Guoyuan,et al.Safety crite-rion of blasting vibration for structure based on wavelet packet anal-ysis[J].Chinese Journal of Geotechnical Engineering,2009,31(2):223-228.
[13]陈士海,魏海霞.爆破地震波频率对多自由度弹性体系动力响应的影响分析[J].振动与冲击,2009,28(11):150-155.Chen Shihai,Wei Haixia.Effect analysis of blasting seismic wave frequency on dynamic response of amulti degrees of freedom elastic system[J].Journal of Vibration and Shock,2009,28(11):150-155.
[14]毕明芽,李名山,刘朝红,等.爆破振动预测误差的因素分析[J].爆破,2009,26(2):96-98.Bi Mingya,Li Mingshan,Liu Chaohong,et al.Analysis of forecas-ting error for blasting vibration[J].Blasting,2009,26(2):96-98.
[15]林大超,施惠基,白春华,等.基于小波变换的爆破振动时频特征分析[J].岩石力学与工程学报,2004,23(1):101-106.Lin Dachao,Shi Huiji,Bai Chunhua,et al.Time-frequency charac-teristic analysis of blasting vibration based on wavelet transform[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(1):101-106.
[16]张义平,李宝山,王永明,等.基于Hilbert谱的爆破震动瞬时输入能量模型及计算[J].矿业研究与开发,2009,29(4):88-90.Zhang Yiping,Li Baoshan,Wang Yongming,et al.Model and calcu-lation of momentary input energy of blast-induced vibration based on hilbert spectrum[J].Mining R&D,2009,29(4):88-90.
[2]凌同华,李夕兵,戴塔根,等.基于小波变换的时-能密度法优选微差延时时间[J].重庆建筑大学学报,2006,28(4):36-39.Ling Tonghua,Li Xibing,Dai Tagen,et al.Optimizing delay time in-terval by the means of time-energy analysis based on wavelet trans-form[J].Journal of Chongqing Jianzhu University,2006,28(4):36-39.
[3]史秀志,陈寿如.爆破振动时频特征的段药量及抵抗线效应[J].煤炭学报,2009,34(3):345-349.Shi Xiuzhi,Chen Shouru.Explosive blasted per delay and burden effects on the time-frequency characteristic of vibration induced by blast[J].Journal of China Coal Society,2009,34(3):345-349.
[4]Fang Zefa,Wang Junyue,Zhang Jianhua.Selection of reasonable mil-lisec on dinterval for jinduicheng open-pit molybdenum mine[A].Proceeding of the2007International Symposium on Safety Scince and Technology[C].2007:2394-2398.
[5]赵明生,梁开水,曹跃,等.爆破地震作用下建(构)筑物安全标准探讨[J].爆破,2008,25(4):24-27.Zhao Mingsheng,Liang Kaishui,Cao Yue,et al.Discussion on the security criteria of construction(structure)of building under blasting vibration[J].Blasting,2008,25(4):24-27.
[6]葛哲学,陈仲生.MATLAB时频分析技术及其应用[M].北京:人民邮电出版社,2006.
[7]王祝文,刘菁华,聂春燕.时频分析的重排方法及其在声波测井信号处理中的应用[J].吉林大学学报(地球科学版),2007,37(5):1042-1047.Wang Zhuwen,Liu Jinghua,Nie Chunyan.The reassignment method based on time-frequency analysis and its application in the array a-coustic logging data processing[J].Journal of Jilin University(Earth Science Edition),2007,37(5):1042-1047.
[8]史秀志,陈寿如.爆破振动信号时频特征的微差时间效应[J].湖南科技大学学报(自然科学版),2008,23(3):10-13.Shi Xiuzhi,Chen Shouru.Delay time interval effect for the time-fre-quency characteristic of blast vibration signal[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2008,23(3):10-13.
[9]蔡宗义,吴祖堂,王占江.地运动信号的时频分析[J].解放军理工大学学报,2007,8(5):546-550.Cai Zongyi,Wu Zutang,Wang Zhanjiang.Time-frequency analysis of ground motion signal[J].Journal of PLA University of Science and Technology,2007,8(5):546-550.
[10]飞思科技产品研发中心.MATLAB辅助信号处理技术与应用[M].北京:电子工业出版社,2005.
[11]凌同华.爆破震动效应及其灾害的主动控制[D].长沙:中南大学,2004.
[12]中国生,房营光,徐国元,等.基于小波包分析的建(构)筑物爆破振动安全判据研究[J].岩土工程学报,2009,31(2):223-228.Zhong Guosheng,Fang Yingguang,Xu Guoyuan,et al.Safety crite-rion of blasting vibration for structure based on wavelet packet anal-ysis[J].Chinese Journal of Geotechnical Engineering,2009,31(2):223-228.
[13]陈士海,魏海霞.爆破地震波频率对多自由度弹性体系动力响应的影响分析[J].振动与冲击,2009,28(11):150-155.Chen Shihai,Wei Haixia.Effect analysis of blasting seismic wave frequency on dynamic response of amulti degrees of freedom elastic system[J].Journal of Vibration and Shock,2009,28(11):150-155.
[14]毕明芽,李名山,刘朝红,等.爆破振动预测误差的因素分析[J].爆破,2009,26(2):96-98.Bi Mingya,Li Mingshan,Liu Chaohong,et al.Analysis of forecas-ting error for blasting vibration[J].Blasting,2009,26(2):96-98.
[15]林大超,施惠基,白春华,等.基于小波变换的爆破振动时频特征分析[J].岩石力学与工程学报,2004,23(1):101-106.Lin Dachao,Shi Huiji,Bai Chunhua,et al.Time-frequency charac-teristic analysis of blasting vibration based on wavelet transform[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(1):101-106.
[16]张义平,李宝山,王永明,等.基于Hilbert谱的爆破震动瞬时输入能量模型及计算[J].矿业研究与开发,2009,29(4):88-90.Zhang Yiping,Li Baoshan,Wang Yongming,et al.Model and calcu-lation of momentary input energy of blast-induced vibration based on hilbert spectrum[J].Mining R&D,2009,29(4):88-90.
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