欧玉峰,张远韬
OU Yu-feng,ZHANG Yuan-tao

• 1:广东中人岩土工程有限公司

摘要(Abstract)：

结合花岗岩石场开采爆破实践,介绍了在特殊环境下,利用间隔装药结构和使用普通毫秒导爆管雷管,直接控制炮孔起爆的毫秒延时爆破技术,以及在深孔爆破对有害效应进行控制的相关技术方法和参数。当炮孔深度h≤20m时,采用一层间隔,分两段装药;炮孔深度大于20m,小于25m时,采用两层间隔,分三段装药,孔间间隔时间Δt=100~125ms。在爆区采用"一钻到底"的钻爆施工方式,一次爆破用药量≤2 000kg;根据距爆区最近距离为60m的情况,确定最大单响起爆药量为79.7kg。为在当前电子雷管单价相对较高的情况下,运用普通毫秒导爆管雷管实现毫秒延时爆破、保障爆破安全、改善爆破效果、降低爆破成本等,提供了一种有益的参考。
Combined with the practice of blasting in granite quarry,the millisecond delay blasting technique was used to control the detonation of blasting holes in the special environment,the relevant technique methods and parameters of using the interval charge structure and the ordinary millisecond detonator,and the harmful effect was controlled in the deep hole blasting.When the depth of the hole was h≤ 20 m,one interval and divided into two charges was used to the hole;20m

关键词(KeyWords)： 石场开采;特殊环境;毫秒延时起爆;深孔控制爆破
granite extraction;special environment;millisecond delay initiation;deep hole controlled blasting

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 欧玉峰,张远韬
OU Yu-feng,ZHANG Yuan-tao

参考文献(References)：

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