冯明武
FENG Mingwu(Pengshan Alkali Plant,Pengshan County,Sichuan 620860,China)

• 1:四川彭山碱厂 四川彭山县620860

摘要(Abstract)：

利用非电多段微差爆破网路在5个钙芒硝地下矿进行了100多次挤压爆破,地表生态环境没有受到爆破震动的影响,矿石破碎质量得以改善。应用这种网路时,孔间和排间延时使用1～20段非电毫秒雷管,而线路间延时则用一定长度的导爆管来控制。文中简述了挤压爆破的机理;提出了计算排间延时间隔的经验公式;讨论了线路间延时的确定方法。此外,还介绍了这种网路的一个应用实例。
By use of the nonelectric multipleshortdelay blasting circuit,squeezing blasts of over 100 times were carried out in 5 underground mines of calcium saltpeterThe surface ecological environment was not subjected to effect of blasting vibration and the ore fragmentation was improvedWhen using this blasting circuit,nonelectric millisecond detonators of No 1～20 were used as holetohole and rowtorow delays while a certain length of detonating tube was used for the delay interval of circuittocircuitIn this paper,the mechanism of squeezing blasting was briefly described,an empiric formula for calculation of rowtorow delay was put forward and the determination of circuittocircuit delay was discussedIn addition,a practical example of utilizing this blasting circuit was introduced

关键词(KeyWords)： 地下采矿;挤压爆破;微差爆破;起爆网路;钙芒硝矿
Underground mining;Squeezing blasting;Short-delay blasting;Initiation circuit;Calcium saltpeter mine

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 冯明武
FENG Mingwu(Pengshan Alkali Plant,Pengshan County,Sichuan 620860,China)

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