炸药破矿一般都产生大量粉尘和碳氧化物、氮氧化物等有毒气体。其中部分形成烟尘云雾,从露天矿排出,扩散污染邻近地区。另一部分则滞留在爆落的矿石堆里,在一定时间内仍会对工作场所的人员造成危害。为减少露天矿爆破中的有害物质浓度,必须改进爆破工艺,其中包括应用合理的炮孔装药结构。以实心圆柱体装药结构进行爆破时,我们发现药包中心部分的炸药并没有全部发生化学变化。炸药爆炸分解反应不彻底,会造成有毒气体排出量增高。如果采用实心结构装药爆破,将形成范围很大的岩石压碎区,即 Broken explosives generally have a lot of dust and carbon oxides, nitrogen oxides and other toxic gases. Part of the formation of dust clouds, discharged from the open-pit mine, the proliferation of pollution in neighboring areas. The other part is stuck in the blasting ore heap, in a certain period of time will still cause harm to the workplace staff. In order to reduce the concentration of harmful substances in the blasting of opencast mines, it is necessary to improve the blasting process, including the application of a reasonable charging structure for the blasthole. In the case of a solid cylindrical charge structure blasting, we found that the explosives in the center of the pack did not chemically change. Explosion explosive decomposition reaction is not complete, will result in increased emissions of toxic gases. If using a solid structure charge blasting, will form a wide range of rock crushing zone, that is