| 基于EMD-HHT和小波理论的地下浅孔爆破振动规律研究 |
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| 引用本文： | 李祥龙,赵泽虎,王建国,何丽华.基于EMD-HHT和小波理论的地下浅孔爆破振动规律研究[J].有色金属工程,2021(12):100-108. |
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| 作者姓名： | 李祥龙 赵泽虎 王建国 何丽华 |
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| 作者单位： | 昆明理工大学,昆明理工大学,昆明理工大学,昆明冶金高等专科学校矿业学院 |
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| 基金项目： | 频繁爆破作用下节理岩体损伤本构模型及破裂机理研究（52064025） |
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| 摘 要： | 为了深入研究爆破振动波的传播规律，基于EMD-HHT和小波理论分析了金沙矿业官房矿区402矿段的爆破振动信号。分析结果表明，爆破振动信号的优势能量频率带和能量分布时间主要集中在50Hz、0.65s以内，爆破振动能量的最大值为0.0111cm2.s-2，能量分布主要呈正态分布，在频率为20Hz时能量分布达到了峰值，占爆破振动能量的11.8%，爆破振动信号的最大瞬时能量随着最大单响药量的增加逐渐加大。
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| 关 键 词： | 能量分布 EMD-HHT分析 小波理论 爆破振动信号波 |
| 收稿时间： | 2021/3/11 0:00:00 |
| 修稿时间： | 2021/4/22 0:00:00 |
Research on Vibration Law of Underground Shallow Hole Blasting Based on EMD-HHT and Wavelet Theory |
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| li xianglong,zhao zehu,wang jianguo and he lihua.Research on Vibration Law of Underground Shallow Hole Blasting Based on EMD-HHT and Wavelet Theory[J].Nonferrous Metals Engineering,2021(12):100-108. |
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| Authors: | li xianglong zhao zehu wang jianguo and he lihua |
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| Affiliation: | Kunming University of Science and Technology,Kunming University of Science and Technology,Kunming University of Science and Technology,Faculty of Mining Industry |
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| Abstract: | In order to deeply study the propagation law of blasting vibration wave, based on EMD-HHT and wavelet theory, the blasting vibration signal of the 402 section of the Guanfang mining area of Jinsha Mining was analyzed. The analysis results show that the dominant energy frequency band and energy distribution time of blasting vibration signals are mainly concentrated within 50 Hz and 0.65 s, the maximum value of blasting vibration energy is 0.0111 cm2.s-2, and the energy distribution is mainly normal distribution, and the energy distribution reached the peak value at 20 Hz, accounting for 11.8% of the blasting vibration energy. The maximum instantaneous energy of the blasting vibration signal gradually increased with the increase of the maximum single-shot charge. |
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| Keywords: | energy distribution EMD-HHT analysis wavelet transform theory blasting vibration signal wave |
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