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现代地质 ›› 2020, Vol. 34 ›› Issue (04): 653-662.DOI: 10.19657/j.geoscience.1000-8527.2020.04.02

• 矿床学 • 上一篇    下一篇

桂北苗儿山岩体中段向阳坪铀矿床F7构造带三维地质模型的构建与应用

刘子杰1(), 邹明亮1(), 孙远强2, 李杰1, 陈琪1, 朱鹏飞2, 张涛1   

  1. 1.核工业二三〇研究所,湖南 长沙 410011
    2.核工业北京地质研究院,北京 100029
  • 收稿日期:2019-09-10 修回日期:2020-04-27 出版日期:2020-08-31 发布日期:2020-09-03
  • 通讯作者: 邹明亮
  • 作者简介:邹明亮,男,高级工程师,1983年出生,地质学专业,主要从事铀成矿作用研究。Email: zoumingliang2001@163.com
    刘子杰,男,工程师,1988年出生,地球探测与信息技术专业,主要从事地球物理勘探、三维成矿预测研究。Email: liuzijie88@126.com
  • 基金资助:
    中国核工业地质局铀矿地质科研项目(201719-3);中国核工业集团有限公司菁英项目;国防预研项目(3210402);国家自然科学基金项目(41702102);国家重点研发计划“深地资源勘查开采”重点专项项目(2017YFC0602600)

The Construction and Application of 3D Geological Model of F7 Structural Belt in Xiangyangping Uranium Deposit, Middle Segment of Miao’ershan Rock Mass, North of Guangxi

LIU Zijie1(), ZOU Mingliang1(), SUN Yuanqiang2, LI Jie1, CHEN Qi1, ZHU Pengfei2, ZHANG Tao1   

  1. 1. Research Institute No.230, CNNC, Changsha, Hunan 410011, China
    2. Research Institute of Uranium Geology, Beijing 100029, China
  • Received:2019-09-10 Revised:2020-04-27 Online:2020-08-31 Published:2020-09-03
  • Contact: ZOU Mingliang

摘要:

三维地质建模技术在三维空间结构分析、成矿预测等方面已得到广泛的研究和应用。F7构造带是桂北向阳坪铀矿床一组重要的含矿构造,目前已经揭露到多个富大矿体。本研究基于GOCAD建模平台,以F7构造带为重点研究对象,利用数字化地学信息建立了工作区三维地质模型,直观展示了岩体、构造、矿体之间的三维空间分布特征,模型显示出岩体接触界线复杂多变,矿体严格受到断裂带控制;同时在三维模型的基础上,通过对地质编录资料的数字化,利用地质统计学方法实现了地质蚀变信息的半定量模拟,结果表明强赤铁矿化、强硅化、强钾化叠合强水云母化的部位,其深部很可能赋存富大矿体。通过对工作区三维地质模型的综合研究分析,认为F710构造南端深部具有较好的成矿潜力,为向阳坪铀矿床F7构造带下一步找矿方向提供了科学依据。

关键词: 向阳坪铀矿床, F7构造带, 三维地质建模, 蚀变带模拟, 深部找矿

Abstract:

In recent years, 3D geological modeling technology has been widely researched and applied in three-dimensional spatial structure analysis and metallogenic prediction along with the development of computer technology. F7 structural belt is an important ore-bearing structure of the Xiangyangping uranium deposit in north of Guangxi, and several rich ore bodies have been exposed. In this paper, GOCAD is used as the modeling platform and F7 structural belt is the key research object. The three-dimensional geological model of the working area is established by using the digital geosciences information such as geology, drilling and geophysical prospecting of the Xiangyangping uranium deposit, which visually displays the rock mass, structure and ore body of F7 structural belt. The model shows that the boundary of rock mass is complex and variable and the ore body is strictly controlled by the fault zone. At the same time, on the basis of 3D model, the semi-quantitative simulation of geological alteration information is realized through geostatistical method by the digitization of geological catalogue data. The results show that the deep overlapped sites with strong hematitization, silicification, potash feldspathization and hydromicazation are likely to have rich ore bodies. Through the comprehensive study and analysis of the 3D geological model in the working area, it is concluded that the deep south of F710 structure has a good metallogenic potentiality, which provides a scientific basis for the next prospecting direction of F7 structural belt in Xiangyangping uranium deposit.

Key words: Xiangyangping uranium deposit, F7 structural belt, 3D geological modeling, alteration zone simulation, deep prospecting

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