为了控制精确延时爆破时的爆破振动,基于弹性本波理论给出了合理的毫秒延时间隔时间计算公式,并结合基坑开挖工程,对现场实测信号进行分析。结果表明:孔内毫秒延时间隔为4 ms和孔间毫秒延时间隔为12ms时的瞬时能量较小,利于爆破振动控制。短毫秒延时间隔能够实现爆破地震波能量大幅减小,并能优化爆破振动能量分布范围,趋向于高频方向发展。 In order to control the blasting vibration during precise time-delay blasting, a reasonable calculation formula of millisecond delay time is given based on the elastic wave theory. Combined with the excavation of foundation pit, the field measured signals are analyzed. The results show that the instantaneous energy is small when the delay interval of millisecond in the hole is 4 ms and the delay interval of millisecond in the hole is 12 ms, which is good for the control of blasting vibration. The short millisecond delay interval can greatly reduce the energy of blasting seismic waves and optimize the energy distribution range of blasting vibration and tend to develop in the high frequency direction.