中文摘要：

文章对在微风化的花岗岩石场地采集的毫秒延时爆破地震信号进行了分析，其爆破地震波各段间的振动波形在近距离时，波形分开，而在中远距离处，各段装药激励的爆破地震子波开始叠加。试验数据分析表明，在该试验场地的毫秒延时爆破段延时间隔可以选择在25～50ms间。采用多分辨分析技术对试验中的多段微差爆破地震信号进行了4个尺度的分解，各尺度下的细节分量比较分析表明，毫秒延时爆破的多段延时特征在尺度j=2，3的细节分量中得到了清晰的表示，尤其是在j=2的尺度上表现得更加明显。

英文摘要：

The millisecond delay blasting seismic waves collected from the weakly rotten granite site are analyzed. It is demonstrated that the millisecond delay blasting seismic waves are separated near the source of the blasting holes, while are overlapped as the propagation distance increases. By analyzing the effect of the intervals of the millisecond delay blasting test data on the intensity of the vibration, the optimial intervals of this kind of the test site are found to be 25～50ms. The multi- differentiate analysis method is used to study the characteristics of the multi-blasting seismic waves at 4 different analysis scales . At the scales of j=2,3, the main characteristics embodied in the detail coefficients is manifested clearly, especially at the scale j=2.