深孔毫秒延时爆破在矿区高边坡危岩中的应用  

THE APPLICATION OF DEEP-HOLE MILLISECOND DELAY BLASTING IN STEEP SLOPE ROCK OF MINING AREA

作　　者：邱明灿[1] 谢兴华[1] 马海鹏[2] 李永军 周俊珍 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]中南大学,长沙410000 [3]特种作战学院,广州510000 [4]湖南铁军工程建设有限公司,长沙410003

出　　处：《工程爆破》2013年第5期25-28,共4页Engineering Blasting

摘　　要：结合老虎岩采石场高边坡危岩的爆破,详细介绍了深孔毫秒延时爆破技术在边坡危岩处理中的应用。通过理论分析并考虑实际,将爆区划分为6个区降低了最大单响药量,且提出相对自由面较近、最小抵抗线较小的炮孔使用分段装药技术可有效减少飞石和振动。通过爆破振动测试得到相关数据,并总结了处理矿区高边坡危岩的实践经验,对工程中处理危岩具有重要的指导意义。Deep-hole millisecond delay blasting technology applied to dealing with steep slope rock was introduced in detail based on unstable rock blasting on high slope in Laohuyan stone pit. With theoret- ical analysis and field exploration test, the area was divided into six and the maximum tolerant explosive quantity of single shot was reduced. Besides, another conclusion was put forward that the blast hole with smaller minimum burden could reduce fly-rock and vibration when the deck charge technology was applied. Relevant data were obtained by blasting vibration test and practical experience dealing with unstable rock on steep slope rock was further summarized. It has an important guiding significance for similar 1SSHeS.

关 键 词：深孔毫秒延时爆破 高边坡危岩 分段装药 爆破振动 

分 类 号：TD824.2[矿业工程—煤矿开采] TD824.7[矿业工程—矿山开采]