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随着矿山机械化水平的提高,采用装药器或装药车向中深孔装填粉状炸药,已逐步得到推广。这种装药方法的优点是:(1)减轻劳动强度,提高装填效率;(2)提高装药密度,改善爆破效果;(3)相对地缩小炮孔直径,提高了凿岩速度;(4)节省炸药的包装材料和人工。缺点是:(1)装药时容易产生返粉及堵管现象;(2)装药过程中产生静电,可能引起早爆。前者随着各
With the improvement of mine mechanization level, the use of chargers or charge trucks to charge powder explosives into medium-deep holes has been gradually promoted. The advantages of this charging method are: (1) to reduce the labor intensity and improve the filling efficiency; (2) to increase the charge density and improve the blasting effect; (3) to relatively reduce the diameter of the blast hole and to increase the drilling speed; (4) Save explosives in packing materials and labor. Disadvantages are: (1) prone to powder charging and plugging phenomenon when loading; (2) static charge during charging may cause early explosion. The former with each