爆破作用下基于小波包分析实例研究  

CASE RESEARCH ON WAVELET ANALYSIS METHOD UNDER THE ACTION OF BLASTING VIBRATION

作　　者：张航[1] 刘光[1] 王跃旭 

机构地区：[1]河海大学岩土工程研究所,南京210098

出　　处：《低温建筑技术》2015年第3期95-97,共3页Low Temperature Architecture Technology

摘　　要：根据某隧道复线工程爆破掘进项目,对开挖产生的振动进行监测,采用小波包分析方法对爆破振动信号特性进行深入研究,建立了隧道爆破振动非平稳信号的时频分析方法。结果表明:爆破振动的能量主要集中在主振频率附近,并且振动信号存在多个优势频率,这些优势频率对判断建筑物振动安全至关重要。The article based on the blasting excavation project of one tunnel,monitor the blasting excavation vibrations of the tunnel. The prediction model of blasting vibration,the characteristics of blasting vibration signals and the safety criterion of blasting vibration are studied based on the monitoring results. The results show that the energy of blasting vibration mostly focused around the master frequency. There are multiple dominant frequencies in vibration signals. These dominant frequencies are very important to judge the safety of construction.

关 键 词：隧道爆破 小波包分析 爆破震动信号 

分 类 号：U45[建筑科学—桥梁与隧道工程] TU941[交通运输工程—道路与铁道工程]