millisecond delay blasting

The theory of millisecond delay blasting is introduced briefly. The performances of high-precision detonator are expatiated, and it is compared with common detonator in delay time and errors of delay time.

简单介绍了微差爆破的原理，阐述了高精度雷管的性能，并与普通雷管进行了延期时间与误差比较。

In this paper, the adopted vibration reduction measures, including the determination of excavating sequence, cut mode, advance per round, the use of millisecond delay blasting and the set up of uncharged peripheral holes and others, are discussed.

本文论述了所采取的各种减震措施，其中包括开挖顺序、掏槽形式、循环进尺的确定，微差爆破的使用以及周边空孔的设置等。

The comprehensive blasting technology which combines U kerf blasting with presplitting blasting and smooth blasting and millisecond delay blasting was studied.

研究了U型拉槽爆破与预裂爆破、光面爆破和毫秒延时爆破相结合的综合爆破技术；