1974年4月“世界采矿”杂志曾简要介绍过挪威在铵油炸药中掺入聚苯乙烯微球以形成炸药混合物的经验。这种混合炸药,对于不同的爆破具有合适的能量。在挪威应用经验的基础上,其他国家的用户也采用这种混制方法,并在实践中作了一些改进。当铵油炸药用于巷道掘进时,炮孔组装药量常常超装15～25％。结果导致对周围岩体的较大冲击,引起过多的岩石片落,从而 April 1974 World Mining magazine briefly described Norway’s experience in incorporating ammonium polystyrene explosives into explosives to form explosive mixtures. This mixed explosive, for different blasting has the right energy. Based on the application experience in Norway, users in other countries also adopted this blending method and made some improvements in practice. When the ammonium oil explosives used for roadway tunneling, the amount of gun hole assembly often overloaded 15 ~ 25%. The result is a large impact on the surrounding rock, causing too much rock flaking, thus