矿体统计分析预测在粤西河台金矿的应用

摘 要]矿体统计分析预测以空间上有一定分布规律的找矿信息为研究对象,通过对其进行结合地质实际的统计分析,并将统计分析的结果合理地应用于已知矿体向未知矿体的找矿预测。预测的区域是地质上可靠、统计学上发生概率高的有利区域。其预测思路可分为:(1) 研究并发现有一定规律的找矿信息;(2) 结合地质成矿过程的统计分析;(3) 结合地质实际的高概率预测。本文以粤西河台金矿为例,论述了矿体统计分析预测的的思路与方法。由矿体统计分析预测获得的预测区域与钻孔的见矿位置一致,说明其预测是有效的。该方法可能对矿体在空间分布上有一定规律的矿床都有一定的预测意义。最后,总结了矿体统计分析预测的优点、不足、注意事项及应用前景。

Geostatistical Analysis and Prediction of Orebodies: A Case Study from the Hetai Gold Orefield, Western Guangdong Province

Abstract:The geostatistical analysis and prediction of orebodies (GAPO) method studies ore-search information with regularities of spatial distribution. Such statistics and analysis are based on actual geological data, of which the result is tested by known orebodies and applied to prediction of new orebodies. The predicted region is considered to be reliable in geological settings, and to possess high probability of mineralization in a statistic sense. The process of prediction can be summed up as follows: (1) study and find prospecting information of regularities; (2) do statistical analysis combined with geological information; and (3) predict orebodies with high probability. This paper takes the Hetai gold orefield as an example to illustrate the prediction process of the GAPO. The result shows that the predicted regions by the GAPO method are consistent with orebodies revealed by drill holes, indicating its significance for prediction of orebodies. This method can be applied to the further exploration work of the Hetai gold orefield. In addition, this paper summarizes the advantages, deficiencies, notices and application prospect of the GAPO.