司家营铁矿降低中深孔爆破大块率的措施  

The Measures to Reduce Boulder Yield of Medium-length Hole Blasting in Sijiaying Iron Ore

作　　者：刘汝勇 康志强[1] 李胜辉 叶会师 

机构地区：[1]河北联合大学矿业工程学院,河北唐山063009 [2]河北钢铁集团滦县司家营铁矿有限公司,河北唐山063701

出　　处：《矿业工程》2014年第6期20-21,共2页Mining Engineering

摘　　要：介绍司家营铁矿井下中深孔采矿爆破的现状,对中深孔爆破大块率高的原因进行了分析,通过加强现场地质素描、爆破参数优化、加强中深孔施工管理以及改变装药方式等措施,改善了采矿爆破效果,达到了降低大块率、输出合格矿石的目的。The current situation of medium-length hole blasting of underground Sijiaying Iron Ore is briefly introduced.The cause of high boulder yield of medium-length hole blasting is analyzed;and by measures like strengthening the onsite geological sketch,optimizing blasting parameters,strengthening the medium-length hole construction management, and changing the way of charging etc.,the mining blasting effect is improved,achieving the purpose of reducing the boulder yield,and outputting qualified ore.

关 键 词：中深孔爆破 大块率 

分 类 号：TD235.3[矿业工程—矿井建设]