| 爆破微差延时的EMD识别法 |
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| 引用本文： | 张义平,李夕兵,赵国彦.爆破微差延时的EMD识别法[J].地下空间与工程学报,2006,2(3):488-490. |
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| 作者姓名： | 张义平 李夕兵 赵国彦 |
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| 作者单位： | 中南大学资源与安全工程学院,长沙,410083;中南大学资源与安全工程学院,长沙,410083;中南大学资源与安全工程学院,长沙,410083 |
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| 基金项目： | 国家自然科学基金;中国科学院资助项目 |
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| 摘 要： | EMD（Empirical Mode Decomposition）方法是基于信号的局部特征的信号分解方法。能把复杂的信号分解为有限的具有物理意义的固有模态函数（Intrinsic Mode Function）。它自适应性强且非常适合处理非平稳信号。文章提出了爆破微差延时的EMD识别法，并以某工程中的微差爆破监测到的爆破振动信号为例。利用EMD法将爆破振动信号分解成IMF分量，再通过Himen变换提取IMF主成分分量的包络幅值来达到识别实际微差延时的目的。
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| 关 键 词： | 微差爆破 延时时间 EMD 包络幅值 |
| 文章编号： | 1673-0836（2006）03-0488-03 |
| 收稿时间： | 2005-08-02 |
| 修稿时间： | 2005年8月2日 |
The Method of Using EMD to Identify Time of Delay in Millisecond Blasting |
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| ZHANG Yi-ping,LI Xi-bing,ZHAO Guo-yan.The Method of Using EMD to Identify Time of Delay in Millisecond Blasting[J].Chinese Journal of Underground Space and Engineering,2006,2(3):488-490. |
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| Authors: | ZHANG Yi-ping LI Xi-bing ZHAO Guo-yan |
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| Affiliation: | School of Resources and Safety Engineering, Central South University, Changsha 410083, P . R . China |
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| Abstract: | As a new decomposition method based on the local properties of the signal,the EMD(Empirical Mode Decomposition),which is adaptive and suitable for processing non-stationary signals,can decompose complicated signals into finite intrinsic mode functions with physical meaning.In this paper,the method using EMD to identify time of delay in millisecond blasting was put forward,and based on the data collected from practical millisecond blasting vibration monitoring records,the authors use EMD method to decompose blasting vibration signal into IMF components,and then ascertain the practical time of delay according to the envelope range value drawn from main component of IMF with Hilbert transform. |
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| Keywords: | EMD |
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