祁雨沟金矿无底柱分段崩落法放矿过程中品位及块度动态变化研究  

Study on the Dynamic Change of Grade and Block in the Ore Drawing Process of Pillarless Sublevel Caving Method in Qiyugou Gold Mine

作　　者：刘冬生 陆玉根 LIU Dongsheng;LU Yugen(He'nan Jinyuan Gold Mining Co.,Ltd.;Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.)

机构地区：[1]河南金源黄金矿业有限责任公司,河南省洛阳市嵩县471400 [2]中钢集团马鞍山矿山研究总院股份有限公司

出　　处：《现代矿业》2021年第9期68-71,83,共5页Modern Mining

摘　　要：放矿是无底柱分段崩落法的核心工序,影响放矿管理工作的现场因素主要有放出矿石的品位和块度,品位和块度的动态变化直接决定着开采的经济指标。目前国内采用无底柱分段崩落法的黄金矿山稀少,几乎未见黄金矿山相关放矿品位及块度研究工作。为优化祁雨沟金矿井下放矿工作,对放矿过程中金矿石品位和块度展开跟踪研究,根据该动态变化规律,制定合理的截止放矿管理制度。研究结果对于同类矿山放矿管理工作具有重要意义。Ore drawing is the core process of pillarless sublevel caving method.The field factors affecting ore drawing management are mainly the grade and block of ore released.The dynamic change of grade and block directly determines the economic index of mining.At present,there are few gold mines adopting pillarless sublevel caving method in China,and there is almost no research work on ore grade and block size of gold mines.In order to optimize the ore drawing work of Qiyugou Gold Mine,the grade and block of gold ore in the process of ore drawing are tracked and studied.According to the dynamic change law,a reasonable cut-off ore drawing management system is formulated.The research results are of great significance for the management of similar mines.

关 键 词：金矿 放矿管理 品位及块度 动态变化 

分 类 号：TD853.362[矿业工程—金属矿开采]