钱家店铀矿床钱Ⅱ块资源量估算参数特征  

Study on Geophysical Parameters in Uranium Resource Calculation for QianⅡ Block of Qianjiadian Uranium Deposits

作　　者：钟佳霖 张振强 夏毓亮[3] ZHONG Jialin;ZHNAG Zhenqiang;XIA Yuliang(Geological Party No.243,CNNC,Chifeng 024000,China;Research Institute No.240,CNNC,Shenyang 110032,China;Beijing Research Institute of Uranium Geology,CNNC,Beijing 100029,China)

机构地区：[1]核工业二四三大队,内蒙古赤峰024000 [2]核工业二四〇研究所,辽宁沈阳110032 [3]核工业北京地质研究院,北京100029

出　　处：《铀矿冶》2022年第2期96-103,共8页Uranium Mining and Metallurgy

基　　金：中国核工业地质局“内蒙通辽地区钱Ⅱ块铀矿床探采对比研究”(202110-4)。

摘　　要：针对地浸砂岩型铀矿资源量估算偏差问题,按照《地浸砂岩型铀矿资源储量估算指南》进行估算参数计算和修正。在野外综合取样和室内分析测试的基础上,对湿度、铀-镭平衡系数、镭-氡平衡系数、有效原子序数和钍钾元素等物性参数进行计算和统计分析。结果表明:矿石平均湿度为12.29%,铀-镭平衡系数为0.7650、镭-氡平衡系数为0.8775,有效原子序数算术平均值为12.40;钾含量平均为3.38%,U与K相关系数为-0.043;钍含量平均为9.50×10^(-6),w(Th)/w(U)远远小于0.1,U和Th相关系数仅为0.0705。资源量估算时,应做湿度、铀-镭平衡系数、镭-氡平衡系数修正;不需要做有效原子序数、钍和钾系数修正。运用这些参数,对钱Ⅱ块334潜在铀资源量进行修正,资源量提高了30.70%。Aiming at the problem of deviation of resource estimation of in-situ leaching sandstone-type uranium deposits,geophysical parameters must be calculated and corrected according to Guidebook on resources/reserves estimaton for in-situ leaching sandstone type uraninm deposits.Based on field comprehensive sampling and laboratory analysis and testing,the physical parameters such as U-Ra equilibrium coefficient,U-Rn equilibrium coefficient,effective atomic number,thorium and potassium element are calculated and statistically analyzed.The results show that average humidity is 12.19%,U-Ra coefficient of balance is 0.7650,U-Rn coefficient of balance is 0.8775,average effective atomic number is 12.40,average content of K is 3.38%,coefficient association between U and K is-0.043,average content of Th is 9.50×10^(-6),w(Th)/w(U)is far below 0.10 and coefficient association of U with Th is only 0.0705.The parameters of humidity,U-Ra coefficient of balance,U-Rn coefficient of balance should be corrected,while Th,K and effective atomic number are unnecessary to be amended when uranium resource calculation is done.Appling these parameters to modify 334 potential uranium reserve of QianⅡuranium block,the reserve adds 30.70%.

关 键 词：松辽盆地南部 钱家店砂岩型铀矿 铀资源量 物性参数 

分 类 号：P631.6[天文地球—地质矿产勘探] P624.7[天文地球—地质学]