爆破振动信号时频特征的微差时间效应
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摘要
基于平滑伪Wigner-Ville分布信号重排(RSPWVD),用matlab5.6编写的振动信号处理软件,并在海钢北一采场就微差间隔时间对爆破振动的影响进行试验的基础上,研究了振动信号时频特征的微差时间效应.基于平滑伪Wigner-Ville分布信号重排能全面反映爆破振动信号的时频特征,具有良好的聚集性.采用BC-6型微差起爆器起爆瞬发雷管消除了微差雷管时间漂移带来的误差.将测试获得的不同微差时间条件下的爆破振动波形进行重排,获得了相应条件下的爆破振动时频特征.研究表明,微差时间对爆破振动信号的时频特征影响很大,延迟时间的长短直接影响到整个爆破振动信号主频率及其持续时间.图2,表1,参11.
Delay time interval effects for the time-frequency characteristic of blast vibration signal was studied aided by vibration data analyze software via matlab5.6 based on data Reassigned Smoothing Pseudo Wigner-Ville Distribution (RSPWVD),the test data of Hainan iron corporation No.1 mining area. By comparing the processing of blasting vibration data using different types of time and frequency transformation,it draws a conclusion that the quadratic type of time and frequency transformation is a more straight and more reasonable and higher resolving rate transformation and the researcher can get more detailed and more accurate information when using the method processing the blasting vibration signals. In the experiment,in order to eliminate the time error of delay interval detonator,BC-6 delay interval first fire was used. Blast vibration signal resulted from different delay interval time explosion were reassigned smoothing pseudo Wigner-Ville distribution,and the RSPWVD reflected the time-frequency characteristic of blast vibration. It is proved that delay interval time has great effect on the time-frequency characteristic of blast vibration. Long or short delay interval time determines main frequency and it's durable time. 2figs.,1tab.,11refs.
Delay time interval effects for the time-frequency characteristic of blast vibration signal was studied aided by vibration data analyze software via matlab5.6 based on data Reassigned Smoothing Pseudo Wigner-Ville Distribution (RSPWVD),the test data of Hainan iron corporation No.1 mining area. By comparing the processing of blasting vibration data using different types of time and frequency transformation,it draws a conclusion that the quadratic type of time and frequency transformation is a more straight and more reasonable and higher resolving rate transformation and the researcher can get more detailed and more accurate information when using the method processing the blasting vibration signals. In the experiment,in order to eliminate the time error of delay interval detonator,BC-6 delay interval first fire was used. Blast vibration signal resulted from different delay interval time explosion were reassigned smoothing pseudo Wigner-Ville distribution,and the RSPWVD reflected the time-frequency characteristic of blast vibration. It is proved that delay interval time has great effect on the time-frequency characteristic of blast vibration. Long or short delay interval time determines main frequency and it's durable time. 2figs.,1tab.,11refs.
引文
[1]LIAO Xian-kui,SUN Zai-nan.The Selection of Optimum Initiation Interval DuringMillisecond Blasting[C]//Proceedings of the International Conference on Engineering Blasting Technique.Beijing:Peking UniversityPress,1991.402-405.
[2]陈寿如,李雁翎,谢圣权.露天采场台阶干扰降震爆破技术试验研究[J].湖南科技大学学报(自然科学版),2004,19(2):10-13.CHENShou-ru,LI Yan-ling,XIE Sheng-quan.Experimental Studyof Blasting Vibration Reduction by Waveform Interference in an Open Stope[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2004,19(2):10-13.
[3]娄建武,龙源,卢云.毫秒延时爆破段延时间隔效果研究[J].爆破器材,2006,35(1):26-28.LOU Jian-wu,LONG Yuan,LU Yun.Study on the Intervals of Millisecond Delay Blasting[J].Explosive Materials,2006,35(1):26-28.
[4]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期时间[J].重庆建筑大学学报,2006,28(4):36-39.LING Tong-hua,LI Xi-bing,DAI Ta-gen,et al.Optimizing Delay Time Interval by the Means of Time-energy Analysis Based on Wavelet Transform[J].Journal of Chongqing Jianzhu University,2006,28(4):36-39.
[5]凌同华,李夕兵.用小波变换识别微差爆破中的实际延迟时间[J].湖南科技大学学报(自然科学版),2004,19(2):21-23.LING Tong-hua,LI Xi-bing.Using Wavelet Transform to Identify Practical Time of Delay in Millisecond Blasting[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2004,19(2):21-23.
[6]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 Da-chao,SHI Hui-ji,BAI Chun-hua,et al.Time-frequency Characteristic Analysis of Blasting Vibration Based on Wavelet Transform[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(1):101-106.
[7]王玉杰,梁开水,田新邦.周宁水电站地下厂房开挖爆破地震波衰减规律的研究[J].岩石力学与工程学报,2005,24(22):4111-4113.WANG Yu-jie,LIANG Kai-shui,TIAN Xin-bang.Study on Redundant Regulation of Underground Digging Blasting Vibration of ZhouningHydropower Station[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(22):4111-4113.
[8]李孝林,佟彦军.爆破地震传播规律及其激励特性分析[J].爆破,2004,21(3):90-92.LI Xiao-lin,TONG Yan-jun.Analysis of Blasting Vibration Transmission Regularity and Promoting Characteristics[J].Blasting,2004,21(3):90-92.
[9]宋光明,史秀志,陈寿如.露天矿边坡爆破振动破坏判据新方法及其应用[J].中南工业大学学报(自然科学版),2000,31(6):485-488.SONG Guang-ming;SHI Xiu-zhi,CHEN Shou-ru.New Method for DeterminingBlastingVibration Damage Criterion on Open-pit Slope and Its Application[J].Journal of Central South University of Technology(Natural Science),2000,31(6):485-488.
[10]史秀志.爆破振动信号时频分析与爆破振动特征参量和危害预测研究[D].长沙:中南大学,2007.SHI Xiu-zhi.Study of time and Frequency Analysis of Blasting Vibration Signal and the Prediction of Blasting Vibration Characteristic Parameters and Damage[D].Changsha:Central South University,2007.
[11]nder Uysal,Ercan Arpaz,Mehmet Berber.Studies on the Effect of Burden Width on Blast-induced Vibration in Open-pit Mines[J].Environmental Geology,2007,53(3):643-650.
[2]陈寿如,李雁翎,谢圣权.露天采场台阶干扰降震爆破技术试验研究[J].湖南科技大学学报(自然科学版),2004,19(2):10-13.CHENShou-ru,LI Yan-ling,XIE Sheng-quan.Experimental Studyof Blasting Vibration Reduction by Waveform Interference in an Open Stope[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2004,19(2):10-13.
[3]娄建武,龙源,卢云.毫秒延时爆破段延时间隔效果研究[J].爆破器材,2006,35(1):26-28.LOU Jian-wu,LONG Yuan,LU Yun.Study on the Intervals of Millisecond Delay Blasting[J].Explosive Materials,2006,35(1):26-28.
[4]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期时间[J].重庆建筑大学学报,2006,28(4):36-39.LING Tong-hua,LI Xi-bing,DAI Ta-gen,et al.Optimizing Delay Time Interval by the Means of Time-energy Analysis Based on Wavelet Transform[J].Journal of Chongqing Jianzhu University,2006,28(4):36-39.
[5]凌同华,李夕兵.用小波变换识别微差爆破中的实际延迟时间[J].湖南科技大学学报(自然科学版),2004,19(2):21-23.LING Tong-hua,LI Xi-bing.Using Wavelet Transform to Identify Practical Time of Delay in Millisecond Blasting[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2004,19(2):21-23.
[6]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 Da-chao,SHI Hui-ji,BAI Chun-hua,et al.Time-frequency Characteristic Analysis of Blasting Vibration Based on Wavelet Transform[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(1):101-106.
[7]王玉杰,梁开水,田新邦.周宁水电站地下厂房开挖爆破地震波衰减规律的研究[J].岩石力学与工程学报,2005,24(22):4111-4113.WANG Yu-jie,LIANG Kai-shui,TIAN Xin-bang.Study on Redundant Regulation of Underground Digging Blasting Vibration of ZhouningHydropower Station[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(22):4111-4113.
[8]李孝林,佟彦军.爆破地震传播规律及其激励特性分析[J].爆破,2004,21(3):90-92.LI Xiao-lin,TONG Yan-jun.Analysis of Blasting Vibration Transmission Regularity and Promoting Characteristics[J].Blasting,2004,21(3):90-92.
[9]宋光明,史秀志,陈寿如.露天矿边坡爆破振动破坏判据新方法及其应用[J].中南工业大学学报(自然科学版),2000,31(6):485-488.SONG Guang-ming;SHI Xiu-zhi,CHEN Shou-ru.New Method for DeterminingBlastingVibration Damage Criterion on Open-pit Slope and Its Application[J].Journal of Central South University of Technology(Natural Science),2000,31(6):485-488.
[10]史秀志.爆破振动信号时频分析与爆破振动特征参量和危害预测研究[D].长沙:中南大学,2007.SHI Xiu-zhi.Study of time and Frequency Analysis of Blasting Vibration Signal and the Prediction of Blasting Vibration Characteristic Parameters and Damage[D].Changsha:Central South University,2007.
[11]nder Uysal,Ercan Arpaz,Mehmet Berber.Studies on the Effect of Burden Width on Blast-induced Vibration in Open-pit Mines[J].Environmental Geology,2007,53(3):643-650.
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