The importance of it in safety production of coal mine was discussed through accident case, according to theory of blasting powder and function of stemming.
本文根据炸药的作功原理和炮眼封泥的作用，通过事故案例，论述炮眼封泥质量在煤矿安全生产中的重要性。
Combining the chemical cleaning and air blasting method, this paper introduces a new method of removing the deposit resulting from the shift gas and catalyst powder, etc.
采用化学清洗和空气爆破相结合的方法，清除换热器中由变换气及催化剂粉末等形成的垢物，降低换热器的阻力，提高热效。
Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting parameters such as hole diameter, hole space, gun- powder charge line density, and uncoupling factor.
通过大量的预裂爆破试验，得出了适用于该边坡的炮孔直径、炮孔间距、线装药密度、不耦合系数等一系列常规预裂爆破参数。
Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting parameters such as hole diameter, hole space, gun- powder charge line density, and uncoupling factor.
通过大量的预裂爆破试验，得出了适用于该边坡的炮孔直径、炮孔间距、线装药密度、不耦合系数等一系列常规预裂爆破参数。
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