小波变换在某高烟囱拆除爆破振动分析中的运用  

Application of Wavelet Transform in Vibration Analysis on Blasting Demolition of a High Chimney

作　　者：刘飘[1] 张可玉[1] 王兴雁[1] 

机构地区：[1]海军潜艇学院,山东青岛266071

出　　处：《爆破》2007年第3期101-103,109,共4页Blasting

摘　　要：对黄岛热电厂烟囱拆除中的振动信号进行了分析,用"db6"小波基对信号进行分解,从分解信号中提取了各次振动不同频率段的时间信息,并对各频带进行能量统计。分析表明,在爆破振动分析中,使用小波分析比传统分析能更好地观察振动信号的时频特性。此次振动由于震源多而成分复杂,能量分布广,主振频带较单一震源的振动信号宽,烟囱塌落构成地面振动的主要因素。The vibration signal caused by blasting demolition of a chimney in Huangdao was analyzed in this paper,the signal was decomposed by “db6”, time-domain information of each vibration was picked from the decom- posed signals, and the energy of each frenquency band was calculated. It shows that using wavelet transform can help observe the time-frequency characteristic of blasting vabration signal. Due to the multi-epicentre, the components of this vibration were complex,the energy distributing was much wider,and the main frequency band was wider than the vibration caused by single epicentre.

关 键 词：拆除爆破 振动 小波变换 多分辨分析 

分 类 号：TD235.1[矿业工程—矿井建设]