东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (4): 557-562.DOI: 10.12068/j.issn.1005-3026.2019.04.020

• 资源与土木工程 • 上一篇    下一篇

分期矿量范围对境界优化的影响

顾晓薇， 张伟峰， 王青， 胥孝川   

  1. (东北大学 资源与土木工程学院， 辽宁 沈阳110819)
  • 收稿日期:2018-05-31 修回日期:2018-05-31 出版日期:2019-04-15 发布日期:2019-04-26
  • 通讯作者: 顾晓薇
  • 作者简介:顾晓薇(1971-)，女，辽宁凤城人，东北大学教授，博士生导师; 王青(1962-)，男，内蒙古兴和人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51474049，51674062)； 国家自然科学基金青年基金资助项目(51604061)； 中央高校基本科研业务费专项资金资助项目(N160104009).

Influence of Staging Ore Volume on Boundary Optimization

GU Xiao-wei， ZHANG Wei-feng， WANG Qing， XU Xiao-chuan   

  1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2018-05-31 Revised:2018-05-31 Online:2019-04-15 Published:2019-04-26
  • Contact: ZHANG Wei-feng
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摘要： 以帮坡角及技术经济参数为依据，基于矿床数值模型，运用锥体排除法生成最大境界.根据在最大境界内产生的地质最优候选境界序列，设置5组不同分期矿量范围.通过对分期数、分期境界内的矿岩量、净现值及各分期跨度时间的对比，分析分期矿量范围对境界优化的影响.优化结果表明:分期矿量下限不变，上限增加，分期数减少，由9期开采转为8期开采;分期境界内采矿量、岩石剥离量的波动主要发生在前几个分期境界内.总净现值一直增加，但增加幅度逐渐减小.各分期时间跨度下限不变，上限逐渐增加.从总净现值及分期跨度时间来看，分期矿量范围在6~9年或6~10年更适于该矿山提高经济效益.

关键词: 露天矿, 境界优化, 分期开采, 分期矿量, 矿床数值模型

Abstract: The cone elimination method was used to generate the maximum boundary based on established numerical model of ore deposits considering slope angle and technical economic parameters.On the basis of the geological optimum candidate boundary sequence produced in the maximum boundary， five groups of staging ore volume were set up. By comparing the staging number， the amount of ore and rock in staging boundary， the net present value and the time span of each stage， the influence of staging ore volume on boundary optimization was analyzed. The optimization results showed that the lower limit of the staging ore volume remains unchanged and the upper limit increases， the staging number decreases from 9 to 8.The fluctuation of the mining amount and the rock stripping amount in the staging boundary mainly occurs in the first few stages. The total net present value has been increasing，however the increase is gradually decreasing. The lower limit of the staging time span is unchanged， the upper limit is gradually increasing. According to the total net present value and the staging time span， staging ore volume in 6~9a or 6~10a is more suitable to improve economic efficiency.

Key words: open-pit mine, boundary optimization, installment mining, staging ore volume, numerical model of mine deposit

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