无底柱分段崩落法采场出矿贫化控制的研究与实践  

Research and Application on Dilution Control of Ore Drawing from Stope Mined by Non-pillar Sublevel Caving Method

作　　者：黄正全 

机构地区：[1]中国华冶科工集团有限公司,北京100176

出　　处：《矿业研究与开发》2017年第11期13-16,共4页Mining Research and Development

摘　　要：在无底柱分段崩落法回采过程中,试验出一种进路出矿口眉线成型调整技术,既能充分发挥采场爆破前拱形进路巷道较好的稳定性,又能确保采场进路爆破后通过眉线调整取得对放矿有利的宽大平整矩形眉线口,实现提高出矿指标的目的。In the mining process by non-pillar sublevel caving method, a kind of brow adjustment technology for ore-drawing outlet in the drift was put forward, which not only could make full use of the stability of arched drift before blasting stope, but also could ensure to obtain the wide and smooth rectangular brow edge which was favorable to the ore drawing after blasting drift, so as to realize the purpose of improving ore-drawing indexes.

关 键 词：无底柱分段崩落法 出矿贫化 出矿形状 眉线调整 

分 类 号：TD853.31[矿业工程—金属矿开采]