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首页> 外文会议>Applications of Computers and Operations Research >Estimation of Coal Quality Using Indicator Kriging Applied to Data Obtained By Borehole Geophysical Logging
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Estimation of Coal Quality Using Indicator Kriging Applied to Data Obtained By Borehole Geophysical Logging

机译：使用指示克里格估计煤炭质量施加到钻孔地球物理测井所获得的数据

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摘要

Mineral resources estimation comprises basically two stages: (i) data collection, analysis and validation, and (ii) the estimate of the grades and tones of the deposit. The most applied method for sampling survey in mineral exploration is rotary drilling with total core recovery. High drilling costs make borehole geophysical logging attractive to obtain the maximum possible information from each borehole helping to understand ore intersections, grades variability, limits of the deposits and continuity of the mineralization. In this paper, borehole geophysical logging was used to enhance the sampling survey and to derive grades indirectly (without lab analysis) with a certain amount of uncertainty. Indicator kriging (IK) was the estimation method used, as it is adequate to incorporate the uncertainty associated with the geophysical derived grade values. The results were compared to the conventional procedures using grades determined via core analysis and ordinary kriging. Borehole geophysical logging proved to be efficient to define the essential features of ore deposit and IK provided results with acceptable precision and accuracy if compared to the model provided by ordinary kriging.
机译：矿产资源估计基本上包括两个阶段：（i）数据收集，分析和验证，（ii）押金等级和音调的估计。矿物勘探中的采样调查的最具应用方法是旋转钻孔，全面核心恢复。高钻削成本使钻孔地球物理测井具有吸引力，以获得每个钻孔的最大可能信息，帮助了解矿石交叉口，种类可变性，沉积物的限制以及矿化的连续性。在本文中，使用钻孔地球物理测井来增强采样调查，间接（无实验室分析）与一定数量的不确定性进行衍生等级。指示器Kriging（IK）是所使用的估计方法，因为它足以结合与地球物理衍生等级值相关的不确定性。将结果与通过核心分析和普通克里格测定的等级的常规方法进行比较。钻孔地球物理测井证明是有效的，以定义矿床和IK的基本特征，如果与普通Kriging提供的模型相比，可接受的精度和准确性提供了可接受的精度和准确性。

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