黔西南者相金矿床三维地质可视化建模及应用  

3D Geological Visualization Modeling and Its Application in Zhexiang Gold Deposit,Southwest Guizhou Province

作　　者：邰文星 周琦[2] 杨成富[1] 吴冲龙[3] 赵平 刘建中[2] 王泽鹏[1] 何金坪[1] 刘光富[1] Tai Wenxing;Zhou Qi;Yang Chengfu;Wu Chonglong;Zhao Ping;Liu Jianzhong;Wang Zepeng;He Jinping;Liu Guangfu(The 105 Geological Team of Guizhou Geological Mineral Exploration and Development Bureau,Guiyang 550018,China;Guizhou Bureau of Geology and Mineral Exploration and Development,Guiyang 550001,China;China University of Geosciences,Wuhan 430074,China)

机构地区：[1]贵州省地质矿产勘查开发局一0五地质大队,贵州贵阳550018 [2]贵州省地质矿产勘查开发局,贵州贵阳550001 [3]中国地质大学,湖北武汉430074

出　　处：《地球科学》2023年第11期4017-4033,共17页Earth Science

基　　金：贵州省科技计划项目(Nos.黔科合平台人才⁃CXTD[2021]007;黔科合支撑[2021]一般408);贵州地矿局地质科研项目(Nos.黔地矿科合[2021]1号;黔地矿科合〔2020〕7号);贵州省地质勘查资金项目(No.520000214TLCOG7DGTNRG).

摘　　要：者相金矿床是黔西南地区典型的卡林型金矿床之一,其矿体埋藏深、形态复杂,导致深部断裂控矿特征、矿体赋存规律和下一步找矿方向尚不明晰.鉴于此,采用QuantyPES三维建模软件对矿区深部地层、断裂、矿体进行了精细三维可视化建模,借此对深部断裂控矿特征、矿体分布规律开展了详细研究,并进一步开展了深部成矿预测和资源量估算.基于三维可视化功能,结合化探异常特征研究和钻孔岩心揭露,查明F20断层是矿区主要导矿和控矿断裂,并初步构建矿区的构造控矿模式;预测者相金矿外围北北东边深部还有较大的成矿和找矿潜力.对三维矿体模型利用地质统计学法计算得到矿区的总资源量为15550 kg,平均品位为3.59 g/t,与传统地质块段法的计算结果误差较小,表明利用克里格法进行资源量估算具有较高的可靠性.本研究为该类型的矿床研究和成矿预测提供了新的手段,为者相金矿深部及外围优选找矿靶区、为指导灰家堡背斜其他矿区的矿产勘查起到重要的示范作用.Zhexiang gold deposit is one of the typical Carlin-type gold deposits in Southwest Guizhou Province.However,the characteristics of ore-controlling faults,laws of ore-bodies orientation,and directions for further prospecting are still unclear,since the ore bodies are deep buried,with complicated shapes.In this paper it employs QuantyPES 3D modeling software for the fine 3D visualization modeling of deep strata,faults and ore-bodies in the mining area,to characterize the ore-controlling faults and relevant ore-bodies,to evaluate its deep metallogenic capacity,and to estimate the potential mineral resources.Based on the 3D visualization,and data of the characteristics of geochemical anomaly and field drilling exposure,it is revealed that the F20 fault is main ore-leading and controlling fault in the mining area.The structural ore-controlling model in the mining area is constructed,suggesting that there is great metallogenic and prospecting potential in the direction of deep NNE-striking F20 at the periphery of Zhexiang deposit.The calculated gold resources of mining area are 15550 kg with the average grade of 3.59 g/t according to the 3D ore-bodies model,which is comparable to the results of traditional geological block method,indicating that the gold resources calculated by Kriging method are reliable.This study provides a new approach to characterize and prospect for the Carlin-type gold deposit,and a demonstration of the optimization of prospecting target areas in the depth and periphery of the Zhexiang gold deposit,which can be further used to guide the regional mineral exploration in the Huijiabao anticline.

关 键 词：三维建模 可视化 构造控矿 成矿预测 者相金矿 资源量估算 钻井 钻孔 矿床地质 

分 类 号：P631[天文地球—地质矿产勘探]