冻结立井爆破乳化炸药拒爆原因及防止措施  

Reasons and Overcoming Measures of Anti-explosion of Emulsification Detonator in Blasting at Freezing Gravel Stratum Shaft

作　　者：朱福元[1] 

机构地区：[1]淮南瞬泰化工责任有限公司,安徽淮南232072

出　　处：《淮南职业技术学院学报》2005年第3期31-33,共3页Journal of Huainan Vocational Technical College

摘　　要：乳化炸药一般具有良好的抗冻性能,温度在-30℃的情况下能稳定传爆,但在立井冻结砾石层段爆破施工中,却出现了大量的盲炮,根据现场分析和试验结果,产生盲炮的原因是炮孔中的水结冰,体积增大,压力升,使炸药密度增大,超过其稳定爆轰的临界密度,根据产生拒爆的原因,采取了克服拒爆的措施,取得了良好的爆破效果。Emulsification Detonator has a good ability of antifreeze, it can stably deliver blasting when the temperature is -30℃. But in the blasting of freezing gravel stratum shaft, there are many misfires. According to the field analysis and experimental results, the reasons of this are that water is frozen in the hole, and volume becomes bigger, and pressures becomes more, as a result, it may make the density of explosive exceed to critical density of stable detonation. According to these reasons, measures to overcome anti - explosion have been carried out, and have already gained good blasting effect.

关 键 词：乳化炸药 拒爆 抗冻性能 冻结立井 爆破 

分 类 号：TD235.2[矿业工程—矿井建设]