VCR大直径深孔分段爆破成井技术在金牛公司的应用  

Application of VCR large diameter long-hole staged blasting in shaft excavation in Jinniu Company

作　　者：杨志芳 张华涛 李向东[2,3] 盛佳[2,3] 李过生 窦志明 龚益才 

机构地区：[1]嵩县金牛有限责任公司 [2]长沙矿山研究院有限责任公司 [3]国家金属采矿工程技术研究中心

出　　处：《黄金》2015年第5期36-39,共4页Gold

基　　金：科研院所技术开发研究专项资金项目(2014EG215027)

摘　　要：溜井施工是采矿工程中最困难的一环,而在叠层空区环境条件下作业,安全性差,施工难度更大。以金牛公司叠层采空区环境中上、下盘矿体内溜井施工为依托,经国内相关爆破成井理论分析与现场试验验证,采用沿溜井全高自上而下或自下而上钻机钻凿一组倾斜平行炮孔,形成了一整套VCR分段爆破成井技术,实现了复杂空区环境下溜井的高效、安全、经济施工;详述了VCR大直径深孔分段爆破成井施工工艺过程及注意事项,为高度50 m以下溜井深孔爆破成井提供了技术支撑,值得借鉴推广应用。Straight chute construction is one of the most difficult in mining, while the stacked mined-out area environment of poor working conditions and poor safety make the construction even harder. This paper takes chute construction in hanging wall and foot wall orebodies of a stacked mined-out area environment as the engineering background, applies ties of inclined the technique, which is proved both by domestic theory of blasting excavation and in field, to drill a separallel boreholes upwards or downwards, forming a set of VCR staged blasting excavation technique, thus high efficient, safe, economic construction in complex mined-out area environment is realized; elaborates the construction process and precautions of the VCR staged blasting excavation technique,laying the technical foundation for long-hole blasting of straight chutes less than 50 m.

关 键 词：溜井 大直径深孔 叠层空区 分段爆破 成井技术 

分 类 号：TD263[矿业工程—矿井建设]