Influence of explosion parameters on wavelet packet frequency band energy distribution of blast vibration

作     者：中国生 敖丽萍 赵奎 

作者机构：Department of Architecture and Civil EngineeringHuizhou University School of Resources and Environmental EngineeringJiangxi University of Science and Technology School of Civil and TransportationSouth China University of Technology 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2012年第19卷第9期

页      面：2674-2680页

核心收录：

学科分类：12[管理学] 083002[工学-环境工程] 1204[管理学-公共管理] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0837[工学-安全科学与工程] 

基　　金：Foundation item: Project(51064009) supported by the National Natural Science Foundation of China Project(201104356) supported by the China Postdoctoral Science Foundation Project(20114BAB206030) supported by the Natural Science Foundation of Jiangxi Province,China 

主　　题：blast vibration wavelet packet analysis explosion parameter energy distribution 

摘      要：Blast vibration analysis is one of the important foundations for studying the control technology of blast vibration damage. According to blast vibration live data that have been collected and the characteristics of short-time non-stationary random signals, the wavelet packet energy spectrum analysis for blast vibration signal has made by wavelet packet analysis technology and the signals were measured under different explosion parameters （the maximal section dose, the distance of blast source to measuring point and the section number of millisecond detonator）. The results show that more than 95% frequency band energy of the signals sl-s8 concentrates at 0-200 Hz and the main vibration frequency bands of the signals sl-s8 are 70.313-125, 46.875-93.75, 15.625-93.75, 0-62.5, 42.969-125, 15.625-82.031, 7.813-62.5 and 0-62.5 Hz. Energy distributions for different frequency bands of blast vibration signal are obtained and the characteristics of energy distributions for blast vibration signal measured under different explosion parameters are analyzed. From blast vibration signal energy, the decreasing law of blast seismic waves measured under different explosion parameters was studied and the wavelet packet analysis is an effective means for studying seismic effect induced by blast.