摘要
为了深入理解某矿爆破地震波衰减规律,在确定该矿爆破振动信号最佳小波基与阈值函数的基础上,对所测源信号及去噪信号进行萨道夫斯基公式线性拟合并比较分析.结果表明,该矿爆破振动信号的最佳小波基为sym7函数,去噪效果最佳为rigrsure阈值函数;去噪后的爆破振动信号衰减系数k、a值反映该矿岩体强度性质比原始数据的k、a值更为准确,为该矿爆破安全设计提供理论依据.
To better understand mine blasting seismic wave attenuation rule, this paper makes the original signal and noise signal measured on SaDaoFu linear matching for analysis based on determining the mine blasting vibration signal best wavelet base and threshold function. The results show that： blasting vibration signal for the best wavelet base is sym7 function; the optimal denoising effect is rigrsure threshold function. After denoising, it is more accurate to know the mine rock mass strength properties from blasting vibration signal attenuation coefficient k, a value compared with the original data. The research can provide theoretical basis for the mine blasting safety design.
出处
《有色金属科学与工程》
CAS
2014年第3期86-90,共5页
Nonferrous Metals Science and Engineering
基金
江西省研究生创新专项资金项目(YC-S185)
江西省教育厅科技计划项目(GJJ12336)
"十二五"国家科技支撑计划课题(2012BAC11B07)
关键词
爆破振动信号
小波变换
去噪
萨道夫斯基公式
κ、α值
blast vibration signal
wavelet transform
denoising
Sa Rodolfo J Ki formula： κ、α value
