招平断裂带台上-水旺庄段三维地质模型构建及矿体空间分布规律  

Construction of Three-Dimensional Geological Model and Spatial Distribution Law of Ore Body in Taishang-Shuiwangzhuang Section of Zhaoping Fault Zone

作　　者：王永庆 钮涛 杨真亮 李瑞翔 刘天鹏 张腾 WANG Yongqing;NIU Tao;YANG Zhenliang;LI Ruixiang;LIU Tianpeng;ZHANG Teng(No.6 Exploration Institute of Geology and Mineral Resources, Shandong Zhaoyuan 265400, China)

机构地区：[1]山东省第六地质矿产勘查院,山东招远265400

出　　处：《山东国土资源》2022年第7期12-19,共8页Shandong Land and Resources

基　　金：国家自然科学基金项目NSFC,山东联合基金《胶东深部金矿断裂控矿机理》(批准号:U2006201);省财政资金项目、“深地资源勘查开采”重点研发计划专项《深部金矿评价理论、方法与预测》(项目编号:2017CXGC1604);山东省招远市水旺庄矿区金矿勘探。

摘　　要：招平断裂带是胶东三大控矿断裂带之一,其台上-水旺庄段已探明大—超大型金矿床7处,本文利用375个钻孔资料搭建了台上-水旺庄段三维地质模型,系统研究区内三维地质结构,基于大数据技术分析了矿体分布和富集规律。在三维空间内各矿区主矿体沿招平断裂带主裂面下盘分布,其中171-1号矿体和②号矿体连为一体,为一超大矿体。对建模区内主要矿体进行压缩,统计矿体厚度、品位、厚度×品位的分布和变化规律,矿体品位分布不均匀,整体表现为中间品位相对较高,边部品位较低,矿体厚度沿走向和倾向均呈现厚薄相间变化,矿体品位与厚度相关系数为0.192,矿体品位×厚度的三维分布构成了4处矿化富集区,对矿化富集区进行坡度与矿化强度关系分析,矿体主要富集在构造沿倾斜方向上由陡急速变缓中的转折段和缓倾段,在走向上构造波状变化中的舒缓地段易于矿体富集。Zhaoping fault zone is one of three major ore controlling fault zones in Jiaodong area.Seven large-scale and super large gold deposits have been proved in Taishang-Shuiwangzhuang section.In this paper,by using 375 borehole data,a three-dimensional geological model of Taishang-Shuiwangzhuang section has been built.Three-dimensional geological structures in the area has been studied systematically,and the distribution and enrichment law of ore bodies based on big data technology have been analyzed.In three-dimensional space,main ore bodies in each mining area are distributed along the footwall of the main fracture surface of Zhaoping fault zone.No.171-1 ore body and②ore body are connected as a whole,which is a super large ore body.After compressing main ore bodies in the modeling area,distribution and variation law of the thickness,grade and the product of thickness and grade have been counted.It is showed that the grade distribution of ore body is uneven.The grade in the middle section is relatively high and the grade in the edge is low.The thickness of ore body varies from thick to thin along the strike and tendency.The correlation coefficient between ore body grade and thickness is 0.192.The three-dimensional distribution of the product of grade and thickness has formed four mineralization enrichment areas.The relationship between slope and mineralization intensity in mineralization enrichment areas has been carried out.The ore bodies are mainly concentrated in the turning section and gently inclined section in which the structure changes from steep to slow along the inclined direction.In the strike,the soothing section in the structural wavy change is easy to enrich ore bodies.

关 键 词：矿体三维空间 三维地质建模 台上-水旺庄段 招平断裂带 

分 类 号：P618.51[天文地球—矿床学]