土壤光释光测量方法在特拉敖包砂岩型铀矿产地的试验研究  

Experimental Research of Soil Optically Stimulated Luminescence Method at Telaaobao Uranium Occurrence

作　　者：王勇[1,2] 谷懿 赵丹[1,2] 王东升[1,2] 王猛 WANG Yong;GU Yi;ZHAO Dan;WANG Dongsheng;WANG Meng(Beijing Research Institute of Uranium Geology,Beijing 100029,China;CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology,Beijing 100029,China;College of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,China;Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province,Chengdu University of Technology,Chengdu,Sichuan 610059,China)

机构地区：[1]核工业北京地质研究院,北京100029 [2]中核集团铀资源勘查与评价技术重点实验室,北京100029 [3]成都理工大学核技术与自动化工程学院,四川成都610059 [4]成都理工大学地学核技术四川省重点实验室,四川成都610059

出　　处：《铀矿地质》2024年第2期359-366,共8页Uranium Geology

基　　金：中国核工业地质局铀矿地质科研项目“砂岩型铀矿勘查土壤光释光测量关键技术研究及样机研制”(编号:2022-05-6)资助。

摘　　要：文章以探索新型铀矿放射性勘查技术方法的试验效果为目的,在特拉敖包砂岩型铀矿产地开展了土壤光释光测量方法的试验研究。通过数据处理,综合地质、钻孔和物探相关先验信息,分析评价了土壤光释光测量方法在砂岩型铀矿勘查中的应用效果。试验结果显示:土壤光释光测量等效剂量数据非正态分布,不适宜采用逐步剔除法进行数据异常下限的计算;对数处理后的数据符合近似正态分布,可根据数据分布特征进行异常下限的估算。在铀矿体上方及其附近,存在土壤光释光测量等效剂量异常,表明该方法在砂岩型铀矿勘查领域具有较好的发展前景。通过对异常成因的分析,提出通过不同深度样品等效剂量差的矿致释光异常识别方法。In order to explore the effectiveness of novel technical method for uranium exploration,an experimental research on soil Optically Stimulated Luminescence(OSL)method was conducted at typical sandstone type uranium occurrence in Telaaobao.The application effect was discussed on the basis of measurement data processing and the prior information of geology,drilling and geophysical exploration.The research showed that the original equivalent dose data was not in normal distribution,suggesting that the gradual elimination method in calculating the lower limit of anomalies in geochemistry exploration is not suitable.The data processed using logarithms conforms to an approximately normal distribution,which can be used to estimate the lower limit of anomalies for regional equivalent dose data.Soil OSL method has certain advantages in extracting anomalies from buried uranium orebody due to its radioactive accumulation quality.There are soil OSL equivalent dose anomalies above and near the uranium occurrence,indicating that this method has good prospects in the field survey of sandstone type uranium exploration.The solution to anomaly identification was discussed,sampling method of different depths for differentiation was proposed to reduce the identification of non mineral induced anomalies.

关 键 词：特拉敖包 砂岩型铀矿 土壤光释光 释光剂量异常 

分 类 号：P619.14[天文地球—矿床学]