综合物化探方法在荷泗地区“交点”型铀矿找矿预测中的应用  

The Application of Comprehensive Geophysical and Geochemical Exploration Method in the Prospecting and Prediction of"Intersection"Type Uranium Deposit in Hesi Area

作　　者：胡鹏 王家跃[1] 汪清浩 郎白秋 王兴明 张峰[1] HU Peng;WANG Jiayue;WANG Qinghao;LANG Baiqiu;WANG Xingming;ZHANG Feng(Research Institute No.290,CNNC,Shaoguan,Guangdong 512029,China;College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,China)

机构地区：[1]核工业二九〇研究所,广东韶关512029 [2]成都理工大学核技术与自动化工程学院,四川成都610059

出　　处：《铀矿地质》2024年第5期981-991,共11页Uranium Geology

基　　金：中国核工业地质局项目“广东省佛冈县棋盘山地区铀矿资源调查评价”(编号:2023-41-1)资助。

摘　　要：“交点”型铀矿是华南地区最重要铀矿类型之一,寻找“交点”型铀矿对华南地区铀矿增储增产具有重要意义。为快速评价“交点”型铀矿浅部、深部铀成矿潜力,筛选最佳铀成矿有利地段,选择地面伽马能谱、土壤氡气及分量化探3种方法进行组合测量。实践表明:地面伽马能谱测量能直接获取浅表岩石中铀含量,探寻浅表异常矿化信息;土壤氡气测量、分量化探测量则能大致查明深部铀矿化信息,判别深部铀成矿潜力;三者组合能有效预测“交点”型铀矿的浅部和深部铀矿化信息,并被320矿点的方法有效性试验所证实。综合运用上述3种方法,在荷泗地区成功预测3片铀成矿有利地段,并优选Um-1号异常进行探槽揭露,发现较好铀矿化信息,取得明显的找矿应用效果。The"intersection"type uranium deposit is one of the most important types of uranium mineralization in South China.Searching"intersection"type uranium deposit is of great significance for increasing uranium reserves and production in South China.In order to quickly evaluate the shallow and deep uranium metallogenic potentials of the"intersection"type uranium deposits,and to choose the best favorable uranium metallogenic area,a combined measurements methods of ground gamma spectroscopy,soil radon measurement and partial extracted geochemical exploration were selected.Through the geophysical and geochemical works,it showed that the ground gamma spectrum measurement directly obtained the uranium content in the shallow rocks,which can effectively explore the information of superficial abnormal mineralization;the soil radon measurement and the partial extracted geochemical method can roughly identify the deep uranium mineralization information and predict the favorable areas for deep uranium mineralization.The combination of the three measurement methods can effectively predict the shallow and deep information of the"intersection"type uranium deposit,which has been confirmed by the method validity test of known"intersection"type uranium deposits.By using the combined measurement methods above,three favorable uranium metallogenic sectors were successfully predicted in Hesi area,among which the Um-1 area was verified by the later exploration trench project,and favourable uranium mineralization information was found,and the fairly prospecting and prediction effect was obtained.

关 键 词：地面伽马能谱 分量化探 土壤氡气测量 铀矿 

分 类 号：P631[天文地球—地质矿产勘探]