广东长江铀矿田长排地区三维模型构建及意义

3D Model Construction of Changpai Area and Its Significance

诸广长江铀矿田长排地区,浅部勘探程度较高(小于−500 m的浅表),对深部的研究和成矿预测较少,建立该地区−2000 m以浅的三维地质模型丰富了这一领域的内容。基于矿体展布和构造特征,借助多年研究成果和野外地质勘探资料,通过3DMine软件建立了长排地区地表模型、钻孔数据库、矿体模型、岩体模型和构造模型,展示了整个地区地形、岩体、矿体、构造和钻孔数据库的空间展布特征,阐述了各类三维模型的构建方法,总结了矿体和岩体、构造之间的关系,基于模型,进行了深部钻探选址工作,验证钻孔取得显著成效,指出了下一步找矿方向,为长排地区深部成矿预测提供科学依据。

In Changpai area of Zhuguang-Changjiang uranium ore field,the drilling exploration depth is relatively shallow(less than−500 m),and not much research and metallogenic prediction were finished in the area.This three-dimensional geological model with depth below−2000 m will enrich the content to the ore-field.Based on the ore body distribution and structural characteristics,the surface model,borehole database,ore body model pluton model and structural model of Changpai area were established by 3DMine software with the help of many years of research results and field geological exploration data.The spatial distribution characteristics of terrain,pluton,ore body,structure and borehole database of the whole area were presented and the construction methods of various 3D models were elaborated.This paper summarized the relationship between ore body,pluton and structure and made prediction on the deep drilling site selection which was verified with remarkable results.The study provided scientific basis for deep metallogenic prediction in Changpai area.