湖南砂金矿开采现状及发展方向的探讨
来源期刊:中南大学学报(自然科学版)1983年第4期
论文作者:孙盛湘
文章页码:72 - 78
关键词:砂金矿开采; 发展方向; 铲运机; 砂金矿床; 采金船; 开采现状; 推土机; 砂金开采; 开采成本; 开采方法
摘 要:本文分析了湖南砂金矿床及砂金的开采情况。根据国内砂金矿开采经验和参考国外资料,对砂金矿开采的发展方向,提出了见解,即优先发展现代河床及沙洲砂金矿的开发,重点发展钢绳——桩桩式链斗采金船的开采方法。对于河谷冲积等类型的砂金矿,则以发展拖拉铲运机,推土机为主进行剥离,采用拖拉铲运机、前端装运机以及小型挖掘机进行采矿,配以移动式粗选厂。对如何正确地规划开采矿点也进行了论述,并提出了控制砂矿开采所允许的金属最低品位及最大剥采比的分析式。
Abstract: This paper has analysed the Hunan alluvial gold deposit and its present mining status. According to the mining experience at home and abroad, practical suggestions for the development orientation of Hunan alluvial gold mining in the future are put forword as follows: The riverbed and alluvium alluvial gold should be preferentially mined with bucket-chain dredges controlled by rope-spud method. As for valley saprolite alluvial gold deposit exploitation, tractor scrapers and bulldozers should be used for stripping; and tractor scrapers; front-end loaders and small power shovels, fitted with a portable mill for primary dressing, can also be uti- lized in placer extraction. The location programming for placer mining has been discussed. The formulas of break-even cut-off ore grade and maximum stripping ratio are presented.