无底柱分段崩落法在四方金矿的放矿规律研究  

Research on Ore Drawing Regularity of Pillarless Sublevel Caving Method in Sifang Gold Mines

作　　者：潘健 孙国权[1,2] 罗才严 王靖 陆玉根[1,2] Pan Jian;Sun Guoquan;Luo Caiyan;Wang Jing;Lu Yugen(Sinosteel Maanshan Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;State Key Laboratory of Safety and Health for Metal Mines,Maanshan 243000,China;Shaanxi Fengxian Sifang Gold Mine Co.,Ltd.,Baoji 721000,China)

机构地区：[1]中钢集团马鞍山矿山研究院有限公司,安徽马鞍山243000 [2]金属矿山安全与健康国家重点实验室,安徽马鞍山243000 [3]陕西凤县四方金矿有限责任公司,陕西宝鸡721000

出　　处：《金属矿山》2020年第2期154-157,共4页Metal Mine

摘　　要：由于四方金矿品位分布不均匀、矿岩界限不明显及矿岩性质的特殊性,其放矿规律较为复杂。主要采用现场工业试验和理论数据分析的方法,探讨无底柱分段崩落法在四方金矿的放矿规律问题。结果显示纯矿石回收阶段出矿量为设计崩矿量的40%左右;覆盖岩层混入阶段出矿品位波动性较大,这与金矿品位分布不均、泥矿到达采场、上部残留崩落矿石较多有很大关系。同时重点分析了泥矿的形成原因和品位分布特征,认为水和千枚岩相互作用导致进路出现泥矿;下分段泥矿品位高于上分段泥矿品位。该研究成果对四方金矿的放矿管理起到了至关重要的作用。Due to the uneven grade distribution,the indistinct boundary of ore and rock and the particularity of ore and rock properties,there exists the complex ore drawing regularity of Sifang Gold Mine. In this study,the field industrial tests and theoretical data analysis are carried out discuss the ore drawing regularity of Sifang Gold Mine with pillarless sublevel caving method. The results show that the ore yield at the recovery stage of pure ore is about 40% of the designing blasting ore yield. The ore grade fluctuates greatly at the mixing stage of overburden,which is closely related to the uneven distribution of gold grade,the arrival of slime ore to the stope and the large amount of residual caving ore in the upper part. At the same time,the reason for generating slime and the grade distribution characteristics are analyzed emphatically. It is considered that the interaction of water and phyllite results in the occurrence of slime in the route;The slime grade at the lower section is higher than that at the upper section. The research results play an important role in the ore drawing management of Sifang Gold Mine.

关 键 词：金矿 无底柱分段崩落法 放矿规律 泥矿品位 

分 类 号：TD853[矿业工程—金属矿开采]