摘要
通过分析非均匀矿岩散体流动特性对出矿控制点的影响 ,进行了多分段放矿实验室立体实验 ,结果得出 :在白银铜矿崩落矿岩条件下 ,当矿岩散体覆盖层颗粒不小于矿石时 ,出矿控制点是在见到覆盖废石正常到达出矿口便停止放矿 ,就整个矿体而言 ,可以取得较好的回采指标 ;当覆盖废石颗粒远小于矿石时 ,出矿控制点以当次废石混入率取 30 %为最好。
Based on the analysis of the effect of the flowing characteristics of the heterogeneous loose body and the laboratory steric experiment of multi-section ore drawing.It is concluded that, under the conditions of the caved ore-rock of Baiyin Copper Mine and when the wasterock particle size of the overlaying strata is not smaller than that of the ore, it is better for the controlled drawing point to stop drawing when the overlaying waste reaches the drawpoint. To the whole deposit, it means a better extraction index. If the waste particle size is far smaller than that of the ore, it is better to take waste in-ore rate of 30%.
出处
《金属矿山》
CAS
北大核心
2002年第8期22-23,33,共3页
Metal Mine
关键词
非均匀矿岩散体
出矿控制点
铜矿
崩落法
回采指标
Heterogeneous loose body, Controlled drawing point, Underground copper mine
