关键词: 方差分析法, 测井模型, 放射性分布, 均匀性检验

Abstract: The radioactivity exploration metrology station of ARCN has set up a set of γ logging model for a university, including four saturated model source: background, K, U and Th, The variance analysis method was used to test the radionuclide distribution homogeneity of mixed dry and pouring wet materials. The results show that the homogeneity of mixed dry material in the four models was better during the construction process, The F values of background, K, U, Th were 1.19, 1.44, 0.89, 1.89, which were less than F_0.05(11,60)=1.96, The F values of pouring wet material were all higher than F_0.05, but the standard deviation SH between groups and the standard deviation S₂ within the group existed 0.1S₂≤S_H≤10S2. There were some stratification differences in pouring wet materials of each layer, but they were acceptable to a certain extent. The differences can be taken into account as a component of the uncertainty of the model. The practice results prove that the homogeneity of radionuclide distribution between each layer in the process of making the model is verified by ANOVA, and the uniformity of saturation model is accuraterliable, reliable and simple.

Key words: Analysis of variance, Logging model, Radionuclide distribution, Homogeneity test