立井分段掏槽爆破技术应用研究  

Applied study on sectional cut blasting technology for mine shaft sinking

作　　者：倪世顺[1] 

机构地区：[1]煤炭科学研究总院北京开采设计研究分院,北京100013

出　　处：《煤炭科学技术》2008年第7期34-37,共4页Coal Science and Technology

摘　　要：为了提高立井深孔掏槽爆破效率,减少爆破器材消耗量和循环钻爆作业时间,加快立井施工速度。对立井深孔二分段掏槽和三阶掏槽的掏槽眼直径、深度、分段数及起爆时差等参数进行了应用研究。结果表明,分段式掏槽爆破在技术上可行,经济上合理,有利于提高立井中硬岩地层深孔爆破效率,加快立井掘进速度。In order to improve the cut blasting rate of mine shaft deep borehole, to reduce the blasting material consumption and the circu- lated blasting operation time and to speed up the mine shaft construction speed, an applied study on the cut borehole diameter, depth, section number and initiating time difference and other parameters was conducted for the cut of two-section and three-section.The result showed that the sectional cut blasting was feasible in technology and rational in economic.The technology would be favorable to the im- provement of deep borehole blasting efficiency in the medium hard rock strata of mine shaft sinking and could speed up the mine shaft sinking speed.

关 键 词：分段式 掏槽爆破参数 中硬岩地层 立井施工速度 

分 类 号：TD26[矿业工程—矿井建设] TD23