ANFO在炮孔中的殉爆起爆试验研究  

Experimental Study on Sympathetic Detonation of ANFO in Hole

作　　者：余德运 谢烽 王旭耀 YU Deyun;XIE Feng;WANG Xuyao(North Blasting Technology Co,Ltd.,Beijing,100097)

机构地区：[1]北方爆破科技有限公司,北京100097

出　　处：《爆破器材》2020年第5期59-64,共6页Explosive Materials

摘　　要：为了检验空气间隔装药结构中,现场混装铵油炸药(ANFO)主发装药段殉爆被发装药段的可行性和可靠性,设计了殉爆检验和试验方法,进行了5次共36个孔内ANFO殉爆试验,并测试了6个孔径为311 mm的孔内ANFO爆速。结果表明:沙漠地区某露天矿干燥钙质硅酸盐和覆盖砂层台阶爆破时,空气分段间隔装药中,上部装药段可以不设起爆体,直接利用底部装药段殉爆起爆,且孔径311 mm的炮孔比孔径165 mm的炮孔殉爆距离更大;被殉爆的上部装药段的爆速比底部装药段低,且随空气间隔长度的增大而降低;与常规分段起爆相比,采用殉爆起爆,没有放置上部装药段起爆体的工序,从而提高装药效率,节省起爆体成本。In order to test the feasibility and reliability of ANFO main charge detonating charged charge in the air-deck charging structure,a test and verified method of sympathetic detonation of ANFO in hole was designed.36 holes in design were tested for 5 times and detonation velocity of ANFO in 6 holes with diameter of 311 mm were measured.The results show that,during a dry calcareous silicate and sand covered bench blasting at an open-pit mine in the desert,the main charge could detonate the nearby charge without primer.Compared with 165 mm,the sympathetic detonation distance would be longer for 311 mm in diameter.The detonation velocity of charged charge is lower than that of the main charge,and the detonation velocity decreased as the air gap prolongs.Compared with the normal independent detonation,the sympathetic detonation would be more efficient and economic.The process of placing the upper charging section initiator is unnecessary,so as to improve the charging efficiency and save the cost of the initiator.

关 键 词：ANFO 殉爆 爆轰速度 空气间隔 

分 类 号：TD235.2[矿业工程—矿井建设] TJ510.36[兵器科学与技术—军事化学与烟火技术]