减少露天矿爆破大块及根底的方法  

METHODS OF REDUCING IARGE BLASTING FRAGMENTS AND TOES IN OPEN-PIT MINES

作　　者：高毓山 

机构地区：[1]南芬露天矿,本溪市117014

出　　处：《矿业研究与开发》1997年第S1期59-62,共4页Mining Research and Development

摘　　要：大块和根底的出现,不仅严重影响铲装设备的效率,也增加了二次爆破的工作量,而且还影响到其它采矿作业的正常进行。因此,减少爆破大块和根底是矿山生产之急需。The occurrence of large fragments and toes not only affect the efficiency of shovelling equipment seriously but also increase secondary blasting quantity and influence the progress of other normal mining operations. Therefore, this paper summarised and introduced various methods, which are urgently needed for mines production, to reduce large blasting fragments and toes

关 键 词：露天矿山 爆破 大块 底部抵抗线 孔网参数 

分 类 号：TD235[矿业工程—矿井建设]