Influence of maximum decking charge on intensity of blasting vibration

被引：6
作者：
Ling, Tong-hua [1 ]
Li, Xi-bing
机构：
[1] Changsha Univ Sci & Technol, Sch Highway Engn, Changsha 410076, Peoples R China
[2] Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2006年 / 13卷 / 03期
基金：
中国国家自然科学基金;
关键词：
maximum decking charge; blasting vibration; non-stationary random signal; wavelet packet analysis;
D O I：
10.1007/s11771-006-0125-2
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Based on the character of short-time non-stationary random signal, the relationship between the maximum decking charge and energy distribution of blasting vibration signals was investigated by means of the wavelet packet method. Firstly, the characteristics of wavelet transform and wavelet packet analysis were described. Secondly, the blasting vibration signals were analyzed by wavelet packet based on software MATLAB, and the change of energy distribution curve at different frequency bands were obtained. Finally, the law of energy distribution of blasting vibration signals changing with the maximum decking charge was analyzed. The results show that with the increase of decking charge, the ratio of the energy of high frequency to total energy decreases, the dominant frequency bands of blasting vibration signals tend towards low frequency and blasting vibration does not depend on the maximum decking charge.
引用
收藏
页码：286 / 289
页数：4
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