起爆点位置影响爆破效果

Influence of of Initiation Charge Location on Explosive Effectiveness

本文通过计算分析得出，与孔口起爆相比，孔底起爆可延长爆炸产物在孔内的作用时间，极大改善爆破效果，现场实验也说明了这一点。

The action time of blasting is analyzed and calculated. Compared withthat of collar priming, the action time of explosion products in hole bottom primingcan be prolonged, thus the bottom priming greatly modifies the explosive effectiveness, which is proved by the field experiment.