天然γ射线低能谱测定岩性参数的应用研究

A Applied Research on Determining Lithologic Parameter Based on Natural γ-ray Low-energy Spectrum

以理论研究为依据,以天然γ射线低能谱为研究对象,探讨了天然γ射线低能谱段分布特征同岩性参数(有效原子序数、密度)之间的关系。在此基础上根据实测地质剖面的低能伽玛谱线,利用回归分析,定量地确定了天然γ射线低能谱段与岩性参数关联度最高的能量区间,为利用天然γ射线低能谱段信息测定岩性参数提供了依据。

Regarding the field measured ,γ-ray low - energy spectrum as research subject, the paper focus on the relationship between the distribution characteristics of natural γ- ray low - energy spectrum and the lithol- ogic parameter （effective atomic number, density）. On these basis, the highest weighted relational energy range was qualitatively identified by the method of regression analysis , which provided the foundation for the determi- ning litholozic parameter by analyzing information of the natural γ- ray low - energy spectrum.