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  

The application of ore exploration and prediction based on 3D digital model of mineralized domain:A case from a gold mine in Western Australia

作　　者：高雅宁[1] 刘建党 何虎军[1] 李希[1,2] 杨龙伟[1] GAO Yaning LIU Jiandang HE Hujun LI Xi YANG Longwei(School of Earth Science and Resources, Chang＇an University, Xi＇an 710054, China Northwest Nonferrous Geological Mining Group Co. , Ltd. ,Xi＇an 710054, China)

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054 [2]西北有色地质矿业集团有限公司,陕西西安710054

出　　处：《西北大学学报（自然科学版）》2017年第3期441-448,共8页Journal of Northwest University（Natural Science Edition）

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)

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。The method of 3 D geological model has a particular advantage in seeking hidden ore deposits and it is essential especially in those areas with less mineralization information. The Western Australia is covered by so much Quaternary alluvium that has scanty information for ore-finding which causes a high cost for geochemistry or geophysics. Consequently this paper, based on the method of 3D geological model acquired from the Surpac software, set up the gold deposit model of mineralization domain, analyzed and researched the spatial characteristic and regularity of the mineralization domain by geological statistics method, and then made a comprehensive prediction. The research shows that the low grade gold mineralization of this region is consecu- tive in strike direction, but that the high grade gold mineralization has a better continuity in dip and deeper directions than that in strike direction. Therefore the future exploration in this area should aim at the directions of strike and deep. The method on 3 D Digital Model of Mineralized Domain has proved effective and economical, and its foundation and application have a valuable reference to predict the hidden ore-bodies.

关 键 词：隐伏矿体 三维模型 矿化域 找矿预测 

分 类 号：P612[天文地球—矿床学]