摘要
为揭示防波堤爆破挤淤施工对在建核设施监测区域爆破振动强度和频谱特征的影响规律,对现场测试的数据进行回归和小波包分析。结果表明:降低爆破挤淤振动效应的两个关键措施是控制一次起爆药量和爆破地震波主传方向;爆破挤淤炸药能量转化为地震波的比例明显高于陆地爆破;爆破振动能量在监测区域显著集中于低频频带,高频成分基本消失。
In order to reveal the influence law of breakwater blasting toe-shooting method on nuclear facility under construction in terms of vibration intensity and frequency spectrum characteristics, test data regression and wavelet package analysis of its signals were carried out. Results show that controlling single deck explosion and chief propagation direction of blasting seismic wave are two key measures of reducing vibration effect, the prgportion of explosives convert to seismic wave of blasting toe-shooting method blast is higher than that of land blast, and blast vibration energy remarkably concentrates on low frequency band with the higher frequency components being disappeared.
出处
《工程爆破》
北大核心
2010年第2期66-69,共4页
Engineering Blasting
关键词
爆破挤淤
在建核设施
振动效应
回归
小波包分析
Blasting toe-shooting method
Nuclear facility under construction
Vibration effect
Regression
Wavelet package analysis
