【摘要】 为研究某矿水平深孔爆破对巷道稳定性的影响,对该矿爆破作业进行了现场爆破震动测试,得出回采巷道在水平深孔爆破作业时质点位移、峰值速度等参数,通过二元线性回归得出反映爆破地震波衰减的萨道夫斯基公式,并通过HHT法分析得出实测信号的时频特征规律,证实其爆破地震波能量多集中于25Hz内,易引起井下矿岩及构筑物共振失稳破坏,建议给予重视。更多还原

【Abstract】 In order to study the influence of horizontal deephole blasting on drift stability in a mine,the on-site blasting vibration tests were carried out for blasting operation,which obtained particle displacement,peak velocity and other parameters of mining drift under this blasting.The Sadaovsk formula,that reflected the attenuation of blasting seismic wave,was obtained by binary linear regression.Moreover,the frequency characteristics of measured signal were achieved by HHT method,which proved that the blasting seismic energy mainly concentrated in 25 Hz.Due to it would easily cause the resonance unstable failure of ore rock and structure,this situation should be given attention.更多还原