层间氧化带型砂岩铀矿自然电位二维正演计算  

Two-dimensional forward of spontaneous potential in interlayer oxidation zone sandstone type uranium deposits

作　　者：张志勇[1,2] 汤洪志[1] 李曼[1] 

机构地区：[1]东华理工大学,江西抚州344000 [2]中南大学,湖南长沙410083

出　　处：《铀矿冶》2009年第4期216-219,共4页Uranium Mining and Metallurgy

基　　金：国防基础科研资助(A3420060145);国际科技合作资助(2007DFA20790)

摘　　要：通过对砂岩铀矿层间氧化带自然电场形成机理的分析,将其自然电场等效为地下电流源分布的电流场问题,并建立数学物理模型,应用有限单元法得到了较高精度的数值解,为分析层间氧化带自然电位提供依据。该方法可以自由拟合地形,构建任意复杂电阻率模型。The formation mechanism of natural electric field in interlayer oxidation zone sandstone type uranium deposits is analyzed. The spontaneous potential, which is one mixed potential caused by the interaction of unbalanced bodies in interlayer oxidation zone, is regarded as current field of ground current source distribution, and a physical and mathematic model was set up. High-precision numeri- cal solution was obtained by using finite element method. A reference is provided for analyzing sponta- neous potential in interlayer oxidation zone.

关 键 词：自然电位 层间氧化带 有限单元 正演 

分 类 号：P631.321[天文地球—地质矿产勘探] O241.82[天文地球—地质学]