基于Surpac软件的矿床模型构建及矿体资源量估算-以陕西山阳夏家店金钒矿床为例

Estimating Ore-Body Resources and Building the Three-Dimensional Model of Deposits Based on Surpac Software:a Case of the Xiajiadian Gold-Vanadium Deposit,Shanyang County,Shaanxi Province

文章介绍了陕西省山阳县夏家店金钒矿床矿体地质特征,矿体赋存于与寒武系有关的地层及断裂构造中。根据矿床以往地质勘查工程资料,应用Surpac软件建立了矿床数据库,建立了矿区地表模型、矿体模型和品位块体模型,模型形象直观的展现了矿区地形地貌、矿体展布位置及形态。应用普通克立格法建立的矿体品位块体模型,简洁清晰的表达了矿体品位分布位置及高低,并对部分矿体采用不同的基本块体单元估算了资源量,分析认为采用的基本块体单元越小,估算的矿体资源量越精确。将其与勘查报告中采用传统地质块段法估算的资源量进行了对比,表明采用该软件估算的矿体资源量可靠准确,计算过程高效、便捷。

This paper presents the geological characteristics of the gold-vanadium deposit in Xiajiadian,Shanyang County,Shanxi Province,where the ore body lies in the strata and fault structure associated with the Cambrian System.Based on previous geological survey data of the deposit,we have built the deposit database,surficial model of the mining area,orebody model and block model of grades by means of Surpac software.The models show vividly the topography and landform in the mining region as well as the location and morphology of the orebody.The block model of grades,based on the common Kriging method,simply and clearly displays locations and grades of orebodies.Some orebodies are divided into basial blocks for estimation of gold and viadium resource reserve.The result suggests that the smaller the divided basical block units,the more accurate the estimation of orebody resources is.Compared with the resultant ore resources with that by the traditional geological block method,the resrve estimation based on the Surpac software is more reliable and accurate,with an high effecency and convenience in calculation.