分段崩落法斜壁放矿损失贫化机理研究  

Research on Dilution and Loss Mechanism of Ore Drawing under Inclined Wall Condition in Sublevel Caving Method

作　　者：张秀凤[1] 陶干强[1] 朱忠华[1] 杨剑锋[1] 鲁明星 张锐[1] ZHANG Xiufeng;TAO Ganqiang;ZHU Zhonghua;YANG Jianfeng;LU Mingxing;ZHANG Rui(Institute of Nuclear Resources Engineering, University of South China, Hengyang, Hunan 421001, China)

机构地区：[1]南华大学核资源工程学院,湖南衡阳市421001

出　　处：《矿业研究与开发》2018年第4期1-5,共5页Mining Research and Development

基　　金：国家自然科学基金资助项目(51574151)

摘　　要：分段崩落法开采中厚倾斜矿体时,实际生产中普遍存在较高的矿石损失与贫化问题。因此,为了提出降低矿石损失贫化的技术措施,结合物理模拟实验和放矿理论分析,对中厚倾斜矿体开采中的矿石损失贫化机理开展了研究。并根据研究结果,主要分析了开采中厚倾斜矿体时崩落矿岩流动规律及回采中废石混入的演变机理;并从放出体理论的角度分析了导致矿石贫化的废石混入的主要原因;最后根据实验和理论分析,从控制矿岩流速方向提出了相应措施。For exploiting the inclined medium-thick ore body by sublevel caving method, a high loss and dilution problem gener- ally exists in practical production. Therefore, to propose some actual techniques that can decrease the ore loss and dilution, the loss and dilution mechanism of exploiting inclined medium-thick ore body was analyzed on the basis of the experimental simula- tion and the ore drawing theory. According to the study results, the flow laws of caving ore and the mixing evolution of waste rocks were mainly analyzed in the process of mining inclined medium-thick ore body. And the main mixing reasons of waste rocks, which caused the ore dilution, were discussed from the point of the ore-drawing bulk theory. Finally, based on the ex- periment and theoretical analysis, corresponding measures were proposed to control the velocity of ore and rock.

关 键 词：中厚倾斜矿体 分段崩落法 放矿 贫化损失 

分 类 号：TD853.362[矿业工程—金属矿开采]