基于HHT法的爆破震动衰减规律研究  

Research on Blasting Vibration Attenuation Law Based on HHT Method

作　　者：宋志伟 胡龙飞 蒋跃飞 喻圆圆 

机构地区：[1]浙江省高能爆破工程有限公司,浙江杭州310012

出　　处：《矿业研究与开发》2015年第5期56-60,共5页Mining Research and Development

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。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.

关 键 词：水平深孔阶段矿房法 爆破震动 衰减规律 希尔伯特-黄变换 

分 类 号：TD235.1[矿业工程—矿井建设]