隧道掏槽爆破振动信号两种分析方法
|
摘要
通过设计两次起爆的起爆网路,控制掏槽眼引起的振动速度,有效地减少了振动对周边构建物的影响。对掏槽爆破时振动信号进行了FFT分析、小波包分析,结果发现:单向爆破振动速度控制在2.1 cm/s以内,振动频率集中于50~100 Hz。傅里叶分析法(FFT法)与小波包分析法在处理振动信号主频的结果相差不大,速度的FFT图谱与爆破振动信号能量-频谱图相似。可用FFT法快速粗略地计算振动信号的主频与估计能量分配比例。但FFT法计算精度没有小波包分析法高,在精度要求高的情况下仍需使用小波包分析法进行信号分析。
The influence of vibration on building structures around the blasting area was reduced effictively though designing the twice initiation network and controlling the vibration velocity caused by cutting hole blasting.The vibration signals of cutting blasting were analysed by FFT,wavelet packet analysis. The results indicate that the unidirectional vibration velocity was controlled within 2. 1 cm/s,and the frequency was centralized in 50 ~100 Hz. The FFT method and wavelet packet analysis method had little diffrenece on dominant frequency,and the FFT spectrum of velocity and energy spectrum of blasting vibration signal calculated by wavelet packet analysis were similar. The FFT method can be used to calculated the dominant frequency and evaluated the proportion of energy distribution of vibration signal roughly and rapildly. However,the accuracy of FFT method was lower than wavelet packet analysis method. The wavelet packet analysis method is a best choice to precess signal in the case of high precision.
The influence of vibration on building structures around the blasting area was reduced effictively though designing the twice initiation network and controlling the vibration velocity caused by cutting hole blasting.The vibration signals of cutting blasting were analysed by FFT,wavelet packet analysis. The results indicate that the unidirectional vibration velocity was controlled within 2. 1 cm/s,and the frequency was centralized in 50 ~100 Hz. The FFT method and wavelet packet analysis method had little diffrenece on dominant frequency,and the FFT spectrum of velocity and energy spectrum of blasting vibration signal calculated by wavelet packet analysis were similar. The FFT method can be used to calculated the dominant frequency and evaluated the proportion of energy distribution of vibration signal roughly and rapildly. However,the accuracy of FFT method was lower than wavelet packet analysis method. The wavelet packet analysis method is a best choice to precess signal in the case of high precision.
引文
1凌同华,李夕兵.爆破振动信号不同频带的能量分布规律.中南大学学报(自然科学版),2004;(2):310-315Ling Tonghua,Li Xibing.Laws of energy distribution in different frequency bands for blast vibration signals.Journal of Central South University(Natural Science),2004;(2):310-315
2中国国家标准化管理委员会.爆破安全规程:GB 6722-2014.北京:中国标准出版社,2014Standardization Administration of the People’s Republic of China.Blasting safety regulations:GB 6722-2014.Beijing:Standards Press of China,2014
3闫鸿浩,李晓杰,曲艳东,等.爆破振动速度测试精细分析.岩土力学,2007;(10):2091-2094Yan Honghao,Li Xiaojie,Qu Yandong,et al.Fine analysis of blasting vibration velocity testing.Rock and Soil Mechanics,2007;(10):2091-2094
4闫鸿浩,刘智远,李晓杰.烟囱爆破拆除及其振动测试分析.爆破器材,2013;(3):21-24Yan Honghao,Liu Zhiyuan,Li Xiaojie.Chimney blasting demolition and analysis of vibration measurement.Explosive Materials,2013;(3):21-24
5凌同华,李夕兵.单段爆破振动信号频带能量分布特征的小波包分析.振动与冲击,2007;(5):41-43,151-152Ling Tonghua,Li Xibing.Features of energy distribution of single deck blast vibration signals with wavelet packet analysis.Journal of Vibration and Shock,2007;(5):41-43,151-152
6林大超,施惠基,白春华,等.爆破震动时频分布的小波包分析.工程爆破,2002;(2):1-5,16Lin Dachao,Shi Huiji,Bai Chunhua,et al.On time-frequency distribution of blasting vibration through wavelet packet transform.Engineering Blasting,2002;(2):1-5,16
7凌同华,李夕兵.多段微差爆破振动信号频带能量分布特征的小波包分析.岩石力学与工程学报,2005;(7):1117-1122Ling Tonghua,Li Xibing.Analysis of energy distributions of millisecond blast vibration signals using the wavelet packet method.Chinese Journal of Rock Mechanics and Engineering,2005;(7):1117-1122
8何理,钟冬望,刘建程,等.微差爆破试验及爆破振动能量的小波包分析.金属矿山,2014;(6):10-15He Li,Zhong Dongwang,Liu Jiancheng,et al.Millisecond blasting tests and wavelet packet analysis of blasting vibration energy.Metal Mine,2014;(6):10-15
9汪凤泉,郑万泔.试验振动分析.南京:江苏科学技术出版社,1988Wang Fengquan,Zheng Wangan.Test vibration analysis.Nanjing:Jiangsu Science and Technology Press,1988
10费鸿禄,曾翔宇,杨智广.隧道掘进爆破振动对地表影响的小波包分析.爆炸与冲击,2017;(1):77-83Fei Honglu,Zeng Xiangyu,Yang Zhiguang.Influence of tunnel excavation blasting vibration on earth's surface based on wavelet packet analysis.Explosion and Shock Waves,2017;(1):77-83
11宁瑞峰,张世平.小波包分析在爆破震动信号能量衰减规律中的应用.爆破,2014;(01):1-4,37Ning Ruifeng,Zhang Shiping.Application of wavelet packet analysis in blasting vibration signal energy attenuation law.Blasting,2014;(1):1-4,37
12中国生,房营光,徐国元,等.基于小波包分析的建(构)筑物爆破振动安全判据研究.岩土工程学报,2009;(2):223-228Zhong Guosheng,Fang Yingguang,Xu Guoyuan,et al.Safety criterion of blasting vibration for structure based on wavelet packet analysis.Chinese Journal of Geotechnical Engineering,2009;(2):223-228
13闫鸿浩,王小红.城市浅埋隧道爆破原理及设计.北京:中国建筑工业出版社,2013Yan Honghao,Wang Xiaohong.Principle and design of urban shallow tunnel blasting.Beijing:China Building Industry Press,2013
2中国国家标准化管理委员会.爆破安全规程:GB 6722-2014.北京:中国标准出版社,2014Standardization Administration of the People’s Republic of China.Blasting safety regulations:GB 6722-2014.Beijing:Standards Press of China,2014
3闫鸿浩,李晓杰,曲艳东,等.爆破振动速度测试精细分析.岩土力学,2007;(10):2091-2094Yan Honghao,Li Xiaojie,Qu Yandong,et al.Fine analysis of blasting vibration velocity testing.Rock and Soil Mechanics,2007;(10):2091-2094
4闫鸿浩,刘智远,李晓杰.烟囱爆破拆除及其振动测试分析.爆破器材,2013;(3):21-24Yan Honghao,Liu Zhiyuan,Li Xiaojie.Chimney blasting demolition and analysis of vibration measurement.Explosive Materials,2013;(3):21-24
5凌同华,李夕兵.单段爆破振动信号频带能量分布特征的小波包分析.振动与冲击,2007;(5):41-43,151-152Ling Tonghua,Li Xibing.Features of energy distribution of single deck blast vibration signals with wavelet packet analysis.Journal of Vibration and Shock,2007;(5):41-43,151-152
6林大超,施惠基,白春华,等.爆破震动时频分布的小波包分析.工程爆破,2002;(2):1-5,16Lin Dachao,Shi Huiji,Bai Chunhua,et al.On time-frequency distribution of blasting vibration through wavelet packet transform.Engineering Blasting,2002;(2):1-5,16
7凌同华,李夕兵.多段微差爆破振动信号频带能量分布特征的小波包分析.岩石力学与工程学报,2005;(7):1117-1122Ling Tonghua,Li Xibing.Analysis of energy distributions of millisecond blast vibration signals using the wavelet packet method.Chinese Journal of Rock Mechanics and Engineering,2005;(7):1117-1122
8何理,钟冬望,刘建程,等.微差爆破试验及爆破振动能量的小波包分析.金属矿山,2014;(6):10-15He Li,Zhong Dongwang,Liu Jiancheng,et al.Millisecond blasting tests and wavelet packet analysis of blasting vibration energy.Metal Mine,2014;(6):10-15
9汪凤泉,郑万泔.试验振动分析.南京:江苏科学技术出版社,1988Wang Fengquan,Zheng Wangan.Test vibration analysis.Nanjing:Jiangsu Science and Technology Press,1988
10费鸿禄,曾翔宇,杨智广.隧道掘进爆破振动对地表影响的小波包分析.爆炸与冲击,2017;(1):77-83Fei Honglu,Zeng Xiangyu,Yang Zhiguang.Influence of tunnel excavation blasting vibration on earth's surface based on wavelet packet analysis.Explosion and Shock Waves,2017;(1):77-83
11宁瑞峰,张世平.小波包分析在爆破震动信号能量衰减规律中的应用.爆破,2014;(01):1-4,37Ning Ruifeng,Zhang Shiping.Application of wavelet packet analysis in blasting vibration signal energy attenuation law.Blasting,2014;(1):1-4,37
12中国生,房营光,徐国元,等.基于小波包分析的建(构)筑物爆破振动安全判据研究.岩土工程学报,2009;(2):223-228Zhong Guosheng,Fang Yingguang,Xu Guoyuan,et al.Safety criterion of blasting vibration for structure based on wavelet packet analysis.Chinese Journal of Geotechnical Engineering,2009;(2):223-228
13闫鸿浩,王小红.城市浅埋隧道爆破原理及设计.北京:中国建筑工业出版社,2013Yan Honghao,Wang Xiaohong.Principle and design of urban shallow tunnel blasting.Beijing:China Building Industry Press,2013