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Influence of explosion parameters on wavelet packet frequency band energy distribution of blast vibration

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Abstract

Blast vibration analysis is one of the important foundations for studying the control technology of blast vibration damage. According to blast vibration live data that have been collected and the characteristics of short-time non-stationary random signals, the wavelet packet energy spectrum analysis for blast vibration signal has made by wavelet packet analysis technology and the signals were measured under different explosion parameters (the maximal section dose, the distance of blast source to measuring point and the section number of millisecond detonator). The results show that more than 95% frequency band energy of the signals s1–s8 concentrates at 0–200 Hz and the main vibration frequency bands of the signals s1–s8 are 70.313–125, 46.875–93.75, 15.625–93.75, 0–62.5, 42.969–125, 15.625–82.031, 7.813–62.5 and 0–62.5 Hz. Energy distributions for different frequency bands of blast vibration signal are obtained and the characteristics of energy distributions for blast vibration signal measured under different explosion parameters are analyzed. From blast vibration signal energy, the decreasing law of blast seismic waves measured under different explosion parameters was studied and the wavelet packet analysis is an effective means for studying seismic effect induced by blast.

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Authors and Affiliations

  1. Department of Architecture and Civil Engineering, Huizhou University, Huizhou, 516007, China

    Guo-sheng Zhong  (中国生) & Li-ping Ao  (敖丽萍)

  2. School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China

    Guo-sheng Zhong  (中国生), Li-ping Ao  (敖丽萍) & Kui Zhao  (赵奎)

  3. School of Civil and Transportation, South China University of Technology, Guangzhou, 510641, China

    Guo-sheng Zhong  (中国生)

Authors
  1. Guo-sheng Zhong  (中国生)
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  2. Li-ping Ao  (敖丽萍)
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  3. Kui Zhao  (赵奎)
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Corresponding author

Correspondence to Guo-sheng Zhong  (中国生).

Additional information

Foundation item: Project(51064009) supported by the National Natural Science Foundation of China; Project(201104356) supported by the China Postdoctoral Science Foundation; Project(20114BAB206030) supported by the Natural Science Foundation of Jiangxi Province, China

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Zhong, Gs., Ao, Lp. & Zhao, K. Influence of explosion parameters on wavelet packet frequency band energy distribution of blast vibration. J. Cent. South Univ. 19, 2674–2680 (2012). https://doi.org/10.1007/s11771-012-1326-5

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  • DOI: https://doi.org/10.1007/s11771-012-1326-5

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