【摘要】 为深入研究深部金属矿爆破振动波传播与衰减规律，基于极化偏振分析和小波包变换理论，结合深部金属矿现场爆破振动监测数据，对爆破振动波的极化与频谱特性进行分析。深部金属矿爆破振动波由P波、S波及R波构成，且随着爆心距的增加，P波、S波衰减明显快于R波，主导波型由P波、S波向R波转换。爆破振动波的极化特征显著，随着爆心距的增加，长短轴比值和偏振角增大，偏心率在椭圆极化区间稳定，其运动轨迹逐步呈椭圆极化特征。爆破振动信号能量主要集中于低频段，其能量占比超90%，随着爆心距的增加，能量向低频转移，且爆源远区低频能量占比较近区高出13.07%。该研究为深部金属矿爆破振动效应分析与振动控制提供参考依据。更多还原

【Abstract】 Here,in order to deeply study propagation and attenuation laws of blast vibration waves in deep metal mines, based on polarization analysis and wavelet packet transform theory, combined with on-site blast vibration monitoring data of deep metal mines,polarization and spectral characteristics of blast vibration waves were analyzed. The study results showed that vibration waves of deep metal mine are composed of P waves,S waves and R waves,and with increase in blast center distance,attenuation of P waves and S waves is significantly faster than that of R waves,and the dominant wave type is converted from P waves and S waves to R waves; polarization characteristics of blast vibration waves are significant, with increase in blast center distance, long-short axes ratio and polarization angle increase, the eccentricity remains stable in elliptical polarization interval, and its motion trajectory gradually exhibits elliptical polarization characteristics; energy of blast vibration signals is mainly concentrated in low-frequency range,the proportion of low-frequency energy is over 90% of total energy,with increase in blast center distance,energy shifts to low-frequency range,and the proportion of low-frequency energy in blast source far area is 13. 07% higher than that in blast source near area; this study can provide a reference basis for blast vibration effect analysis and vibration control in deep metal mines.更多还原