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《Chinese Journal of Underground Space and Engineering》 2006-03
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The Separating Means of Millisecond Blasing Vibration Signal Based on Wavelet Transform

LING Tong-hua~(1,2),LI Xi-bing~1,DAI Ta-gen~2,PENG Zhen-bin~2(1.School of Resources and Safety Engineering,Central South University,Changsha 410083,China;2.School of Geoscience and Environment Engineering,Central South University,Changsha 410083,China)  
The key to ascertaining reasonable delay time interval by the means of seismic waves superposition effect is to get each sub-signal from measured millisecond blast vibration signal.The separating means of millisecond blast vibration signal based on wavelet transform can solve successfully the problem mentioned above.Firstly,the authors make use of time-energy density analysis based on wavelet transform and get the real delay time by identifying the blast moment of short-delay detonators.Secondly,every sub-signal is separated from measured millisecond blast vibration signal by time-frequency domain transform techniques.Lastly,the optimized delay time interval is obtained by comparing the superposition effect of sub-signal in different delay time interval.The effectiveness of the proposed method is verified with time-energy density analysis of millisecond blasting vibration signals in a underground engineering.
【Fund】: 国家“973”计划项目(2002CB412703);; 中国博士后基金资助项目(2004036430)
【CateGory Index】: TB41
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 YANG Sheng-quan~(1,2),ZHOU Jian_2,CHEN Qiu-nan~1, LU Zhong-yu~1(1.College of Civil Engineering,Hunan University of Sciences and Technology,Xiangtan 411201,China;2.College of Civil Engineering,Tongji University,Shanghai 200092,China);Frequency and Amplitude Analysis of Underground Structure and Rock Affected by Blasting Vibration[J];Chinese Journal of Underground Space and Engineering;2006-01
2 ZHANG Yi-ping,LI Xi-bing,ZHAO Guo-yan (School of Resources and Safety Engineering,Central South University,Changsha 410083,P.R.China);The Method of Using EMD to Identify Time of Delay in Millisecond Blasting[J];Chinese Journal of Underground Space and Engineering;2006-03
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Chinese Journal Full-text Database 1 Hits
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