| 隧道爆破振动与机车振动信号时频特征差异化分析 |
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| 引用本文： | 付晓强,张世平,陈 程,陈帅志,史国利.隧道爆破振动与机车振动信号时频特征差异化分析[J].科学技术与工程,2017,17(15). |
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| 作者姓名： | 付晓强 张世平 陈 程 陈帅志 史国利 |
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| 作者单位： | 中国矿业大学（北京）,太原理工大学矿业工程学院,中国矿业大学（北京）,中国矿业大学（北京）,中国矿业大学（北京） |
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| 基金项目： | 国家自然科学基金-面上项目(51274203);国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 采用频率切片小波变换对复线新建隧道爆破振动与既有隧道机车振动信号进行了分析。在获取两种信号波形和频谱曲线的基础上,利用FSWT对两种信号进行了时频分析。然后根据其逆变换能切割任意频率区间的特点,对两种信号进行子频带划分并得到重构信号;并对两类信号不同的能量分布特性进行了对比研究。研究结果表明:爆破振动信号和机车振动信号的能量主要都分布于200 Hz区域内;在0~100 Hz范围内,机车振动信号所占能量相对较大;100 Hz以上频率区域,爆破振动信号所占能量比例更大。爆破振动信号相对于机车振动信号而言,属于更加高宽频的非平稳随机振动。
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| 关 键 词： | 隧道施工 爆破振动 机车振动 能量分布 |
| 收稿时间： | 2016/11/19 0:00:00 |
| 修稿时间： | 2017/1/5 0:00:00 |
The Difference of Time-Frequency Characteristic Analysis between Tunnel Blasting Vibration and Locomotive Vibration Signal |
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| FU Xiao-qiang,ZHANG Shi ping,CHEN Cheng,CHEN Shuai zhi and SHI Guo li.The Difference of Time-Frequency Characteristic Analysis between Tunnel Blasting Vibration and Locomotive Vibration Signal[J].Science Technology and Engineering,2017,17(15). |
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| Authors: | FU Xiao-qiang ZHANG Shi ping CHEN Cheng CHEN Shuai zhi and SHI Guo li |
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| Institution: | School of Mechanics and Civil Engineering,China University of Mining and TechnologyBei jing,College of Mining Technology,Taiyuan University of Technology,School of Mechanics and Civil Engineering,China University of Mining and TechnologyBei jing,School of Mechanics and Civil Engineering,China University of Mining and TechnologyBei jing,School of Mechanics and Civil Engineering,China University of Mining and Technology(Bei jing) |
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| Abstract: | Based on the frequency slice wavelet transform (FSWT) methods,new tunnel blasting vibration in double track tunnels and the existing tunnel locomotive vibration signals are analyzed. On the basis of acquiring two kinds of signal waveform and spectrum curve, the time frequency analysis of two kinds of signals is carried out by using FSWT. Then, according to the characteristics of the invert transform can cut any frequency range, two kinds of signals are divided into sub bands and the reconstructed signal is obtained, energy distribution characteristics of the two kinds of signals are compared and studied.The results show that the energy of blasting vibration signal and locomotive vibration signal are mainly distributed in the 200 Hz region,In the range of 0~100 Hz, the energy percent ratio of locomotive vibration signal is relatively larger, and the region of 100 Hz above, the energy percent ratio blasting vibration signal is more larger. Compared with the locomotive vibration signal, the blasting vibration signal belongs to a more high frequency non-stationary random vibration. |
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| Keywords: | tunnel construction blasting vibration locomotive vibration energy distribution |
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