【摘要】 以拉西瓦水电站坝肩岩石开挖爆破震动监测信号为分析对象,通过EEMD方法对岩石爆破震动信号进行分解,并对每个IMF分量与原信号的相关性进行分析,去除噪声分量,使去噪后的信号更能真实地体现岩石爆破震动特征。对EEMD与EMD两种方法的去噪效果进行对比分析,得出EEMD去噪方法更具优越性。更多还原

【Abstract】 Taking the monitoring signal of blasting vibration from the excavation of the right dam abutment of Laxiwa Hydropower Station as the objective to be analyzed,the rock blasting vibration signal is decomposed through EEMD(Ensemble Empirical Mode Decomposition) method and the correlation between IMF component and primitive signal is analyzed,so as to remove the noise component and make the signal embody the characteristics of rock blasting vibration more truly.The comparative analysis of de-noising effect made between EEMD and EMD(Empirical Mode Decomposition) methods demonstrates that EEMD possesses moresuperiority over EMD.更多还原