爆破地震波能量分布研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (11) : 38-42.

论文

爆破地震波能量分布研究

徐振洋，杨军，陈占扬，刘燕燕

作者信息 +

Blasting seismic waves energy distribution study based on EEMD

XU Zhen-yang， YANG Jun， CHEN Zhan-yang， LIU Yan-yan

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文章历史 +

摘要

使用电子雷管精确延时逐孔起爆可使爆破振动信号主频及能量分布主频带向高频发展且分布更加均匀。利用EEMD（集合经验模态分解）算法分析振动能量分布规律，结果表明：爆破振动能量主频带出现在15 Hz～45 Hz，主频带内能量占信号总能量的80%以上；爆破振动能量在10 Hz以下频带分布仅占总能量4.5%以下，有效避免了低频振动损伤；将爆破振动能量分布主频带及能量分布比例引入建筑物安全保护进行分析，是一种有效地尝试。

Abstract

Blasting with electronic detonator can be used to make the main band frequency of energy distribution move towards high-frequency and the distribution trend will be more homogenized. EEMD (a collection of empirical mode decomposition)can be used to analyze the main band frequency of blasting vibration energy distribution, which illustrate that blasting main frequency band of vibration energy appeared in 15 Hz-45 Hz. Blasting vibration energy distributes in the frequency band below 10 Hz less than 4.5 % of the total energy of the following, which effectively avoide the low-frequency vibration damage of buildings.Use of blasting vibration energy distribution and energy distribution with frequency proportional to the building safety analysis are effective attempt.

导出引用

徐振洋;杨军;陈占扬;刘燕燕. 爆破地震波能量分布研究[J]. 振动与冲击, 2014, 33(11): 38-42

XU Zhen-yang;YANG Jun;CHEN Zhan-yang;LIU Yan-yan. Blasting seismic waves energy distribution study based on EEMD[J]. Journal of Vibration and Shock, 2014, 33(11): 38-42