基于矿化域三维数字模型找矿预测方法的应用研究——以西澳大利亚某金矿为例

发布时间：2018-02-06 06:23

本文关键词： 隐伏矿体三维模型矿化域找矿预测　出处：《西北大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：三维地质建模方法在寻找隐伏矿床方面具有独特的优势,尤其在地表矿化信息较少的地段,具有不可替代的作用。西澳大利亚由于第四系冲积物的覆盖,地表找矿信息较少,使用常规的地球物理或地球化学方法进行深部预测往往成本较高。该文利用研究区已有的勘查工程数据,以Surpac软件为平台,建立起矿化域三维数字模型与块体模型,同时运用地质统计学方法研究矿化域在空间上的分布形态和分布规律,并进行综合找矿预测。研究结果显示,矿区矿化虽然沿走向方向连续,但其主要为低品位矿连续,而高品位矿在倾向和深部连续性好于走向方向,因此未来矿区勘查方向可以在走向和深部进行倾斜。研究结果表明,矿化域三维数字模型找矿预测方法具有效果好、成本低等特点,其对今后隐伏矿体的勘查及预测工作具有重要的参考意义。
[Abstract]:Three-dimensional geological modeling method has a unique advantage in searching for concealed deposits, especially in areas with less surface mineralization information. Western Australia is covered by Quaternary alluvial materials. The surface prospecting information is less, and it is often costly to use conventional geophysical or geochemical methods for deep prediction. This paper makes use of the existing exploration engineering data in the study area and takes the Surpac software as the platform. The 3D digital model and block model of mineralized area are established, and the distribution pattern and distribution law of mineralized area in space are studied by using geostatistics method, and the comprehensive ore-prospecting prediction is carried out. The results show that. Although mineralization in mining area is continuous along the direction of strike, it is mainly continuous in low grade ore, while the continuity of high grade ore in depth and tendency is better than that in strike direction. Therefore, the direction of exploration in the future mining area can be tilted in the direction of strike and deep. The results show that the method of prospecting and prediction in three dimensional digital model of mineralized area has the characteristics of good effect and low cost. It has important reference significance for the exploration and prediction of concealed orebodies in the future.
【作者单位】：长安大学地球科学与资源学院;西北有色地质矿业集团有限公司;
【基金】：陕西省自然科学基金资助项目(2016JM4001) 中央高校基本科研业务费专项基金资助项目(310827151056,310827153408)
【分类号】：P618.51;P628

【参考文献】