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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Mineral resource classification: a comparison of new and existing techniques
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Mineral resource classification: a comparison of new and existing techniques

机译：矿产资源分类：新技术与现有技术的比较

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摘要

A survey of (20 receni Nl 43-101 technical reports was conducted 10 evaluate the current state of prauice regarding resource classification techniques. The most common classification techniques are based on search neighbourhoods 50% of recent reports), drill hole spacing(30% of recent reports), and/or kriging variance (6% of recent reports). Two new techniques are proposed. The first is based on kriging variance and involves removing one or more drill-holes with the highest weights while performing kriging and using (he resultant kriging variance lor classifi cation. This technique has the advantages of variance based techniques and reduces artifacts. The second technique is based on conditional simulation and uses a moving window approach for classification a( the desired selective mining unit resolution based on larger production volume criteria. This technique has (he advantage of accounting lor heteroscedas-ticity, which is a common characteristic in mineral deposits, and also leduces artifacts since a production volume scale is considered for the actual classification. The drill hole spacing, search neighborhood, kriging variance, and simulation-based techniques are described and compared for 2D and 3D examples with regular and irregular drilling patterns to highlight the advantages and disadvantages of each method.
机译：进行了一项调查（对20个Receni Nl 43-101技术报告进行了调查10），以评估有关资源分类技术的实践现状。最常见的分类技术基于最近报告的搜索邻域的50％），钻孔间距（占30％最近的报告）和/或kriging差异（最近的报告的6％）。提出了两种新技术。第一种是基于克里金法的方差，包括在执行克里金法和使用时去除一个或多个权重最大的钻孔（结果是克里金法方差的分类。该技术具有基于方差的技术的优点，并且减少了工件。第二种技术基于条件模拟，并使用移动窗口方法对（基于较大产量标准的选择性采矿单元分辨率）进行分类。该技术具有（算在内）优势，这是矿床的共同特征，并描述了钻孔间距，搜索邻域，kriging方差和基于仿真的技术，并比较了具有规则和不规则钻孔模式的2D和3D示例，以突出显示钻孔间距，搜索邻域，kriging方差和基于仿真的技术。每种方法的优缺点。

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