光面爆破在井巷掘进中的应用越来越广。光爆效果除了受布孔参数、装药量和装药结构影响之外,还与微差分段起爆有关。多年来井巷光爆微差起爆的最佳间隔时间的确定一直没有得到统一认识。本文根据岩石爆破作用原理及其物理过程,提出了井巷光爆中各圈炮孔间微差起爆的最优间隔时间的近似计算公式,在井巷掘进光爆参数设计和光爆器材生产中有参考意义。 Smooth blasting is widely used in tunneling. In addition to light burst effect by the cloth parameters, charge and charge structure, but also with the differential range of detonation related. For many years, the determination of the optimal interval time of mine explosion light burst has not got a unified understanding. Based on the principle of rock blasting and its physical process, this paper presents an approximate formula for calculating the optimal interval time of micropapillary detonation between blasting lanes in the wellbore optical explosion. In the design of optical explosion parameters for well excavation and in the production of optical explosion equipment D.