兰尖铁矿保护平硐溜井的爆破减震技术措施  

TECHNIQUE OF BLASTING VIBRATION REDUCTION FOR DRIFT-REPASS IN LANJIAN IRON ORE

作　　者：罗开军[1] 庙延钢[1] 张智宇[1] 王国华[1] 

机构地区：[1]昆明理工大学

出　　处：《工程爆破》2006年第4期50-53,49,共5页Engineering Blasting

摘　　要：随着兰尖铁矿采场水平逐年下降,爆破震动对平硐的安全影响日益突出。通过理论分析及现场试验,采用孔间延时爆破、孔间分层延时爆破、孔内孔间延时爆破三种减震爆破方法。通过爆破震动测试数据可以看出,孔内孔间延时爆破的平均振速比孔间延时分层爆破降低26.66%,比孔间延时深孔爆破降低43.85%,爆破降震效果比较明显,有效地保护了平硐溜井。With the progress of the mining operation in Lanjian Iron Ore year on year the effect of blasting vibration on safety of adit is increasing. Based on theoretical analysis and the field test, row-hole MS blasting, down-hole slice MS blasting and down-role-hole MS blasting method are practiced to reduce blasting vibration. Through analyzing the blasting vibration test data, the fact could be found that the average vibrating velocity of down-role-hole MS blasting was reduced by 26.66 % , compared with that of down-hole slice MS blasting, and reduced by 43.85 % , compared with that of row-hole MS blasting. The down-role-hole MS blasting could have a dramatic vibration reduction function and hence could protect the adit effectively.

关 键 词：兰尖铁矿 平硐溜井 爆破减震 延时爆破 

分 类 号：O383.2[理学—流体力学] TD235.12[理学—力学]