水泥矿山中深孔爆破震动信号频谱特征分析
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摘要
为了更好地研究爆破震动波及其对建(构)筑物的影响,用离散小波变换对中深孔爆破震动波进行消噪处理,并对消噪后的震动信号进行-能密度分析和频谱分析。分析表明,在此地质条件下震动信号的能量主要集中在5—45Hz频率段的波形中;爆破段间隔间在100 ms左右降振效果明显。
In order to research the blasting vibration wave and the demolition influence of blasting vibration wave to the constructions and buildings,the disperse wavelet transform was used to analyze the blasting vibration wave of the medium-to-deep blast holes and de-noise it.The blasting vibration wave by time-energy analysis and spectra analysis were analyzed.The analysis indicated that the energy of blasting vibration wave signal mainly existed in 5—45 Hz frequency wave.The blasting vibration was decreasing obviously when subordinates interval was about 100 ms.
引文
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