Estimation of Gold Resources from Exploration Drilling using Conditional Simulation - A Case Study

S. Al-Hassan, J. Kwaha
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引用次数: 1

Abstract

Estimation of gold resources from exploration drilling has passed through various phases and methods at the AngloGold Ashanti, Iduapriem Mine Limited, Tarkwa in Ghana. From the use of Inverse Distance Weighting (IDW) to the use of Ordinary Kriging (OK) and currently the use of Uniform Conditioning (UC). This is all with a view of improving the estimations before the grade control drilling is undertaken for mine planning and subsequent mining. This paper compares the estimates obtained from exploration drilling using conditional simulation with the results from ordinary kriging and actual production figures on a block by block basis for areas that have already been mined in the deposit. The results show that estimates using conditional simulation and ordinary kriging are similar; and, both appear to underestimate the resources.
基于条件模拟的勘探钻井黄金资源量估算方法研究
在加纳Tarkwa的AngloGold Ashanti, Iduapriem矿山有限公司,从勘探钻探中估计黄金资源经过了不同的阶段和方法。从使用逆距离加权法(IDW)到使用普通克里格法(OK),再到目前使用均匀调节法(UC)。这一切都是为了在为矿山规划和随后的采矿进行品位控制钻井之前改进估计。本文对该矿床已开采区域的勘探钻井条件模拟估算结果与普通克里格法估算结果及逐块实际产量数据进行了比较。结果表明,条件模拟的估计与普通克里格的估计是相似的;而且,两者似乎都低估了资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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