基于Surpac的紫金山金铜矿床三维地质建模  

3D geological modelling of Zijinshan Au-Cu deposit based on Surpac

作　　者：阮诗昆 RUAN Shikun(Zijin Mining Group Co., Ltd., Shanghang 364200, Fujian, Chin)

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《地质学刊》2017年第3期421-427,共7页Journal of Geology

基　　金：国家科技支撑计划项目"浅成热液-斑岩型铜;金矿深部成矿模式与勘查技术示范研究"(2009BAB43B04)

摘　　要：使用Surpac三维可视化数字矿山软件,建立了紫金山金铜矿床地质数据库,构建了矿床地表、采空区、巷道、金铜矿体的三维模型;利用地质统计学方法,对样长、组合样长进行基本统计,分析频率累计曲线,确定特高品位并进行处理,开展矿体走向、倾向、厚度方向的变异函数分析和曲线拟合,建立了变异函数模型;确定了估值方法和估值参数,主矿体采用普通克里格法,小矿体采用距离幂次反比法进行估值,建立了带有丰富属性值的矿体块体模型。实践表明,所建地质模型总体可靠性强,适用性符合要求,极大地提高了工作效率。With Surpac software,the geological database of Zijinshan gold-copper deposit was established,and the 3D models of the surface,mined-out area,roadway,and gold-copper ore body were constructed. Geostatistical method was used to analyze samples length,composite samples length and the cumulative frequency curve,and the extra-high grade was confirmed and handled. The variogram function analysis and curve fitting were carried out to study strike,tendency and the thickness direction of ore body,and the variogram function model was established. Valuation method and valuation parameter were determined,where ordinary Kriging method was used for the main ore body and Distance Power Inverse Ratio method for small ore body,and block model of ore body of rich property value was established. The practice shows that the geological model is reliable and feasible to improve work efficiency.

关 键 词：地质数据库 SURPAC软件 三维地质建模 块体模型 紫金山金铜矿 福建 

分 类 号：P628[天文地球—地质矿产勘探]