摘要
根据岩巷单自由面作用下岩石夹制作用较大的特点,介绍了微差爆破技术的基本原理和合理的微差间隔时间。在巷道掘进中合理地选择微差间隔时间,利用先期爆炸产生的应力场、自由面以及岩块间的相互碰撞,可以达到降低炸药单耗、控制爆堆集中和改善爆破效果的目的。
According to the property of free surface of rock, the element theory of millisecond blasting and millisecond delay time are introduced some measures are used to reduce explosive ratio and contro the broken pile and improve the blasting effectiveness by choosing millisecond delay time and taking advantages of the explosion shock and collision between the fly rocks and free surfaces.
出处
《煤矿爆破》
2003年第2期1-3,共3页
Coal Mine Blasting