中南大学学报（自然科学版）2012，Vol.43Issue(12)：4796-4800,5.
基于核磁共振技术的岩石孔隙结构特征测定
Measurement of rock pore structure based on NMR technology
摘要
Abstract
For knowing the rock pore structure, the crosswise relaxation time t2 distribution, nuclear magnetic resonance (NMR) measurement results and magnetic resonance imaging (MRI) were obtained by measuring granite with NMR technology. The results have shown that t2 distribution of granite exhibits three peaks and the subtotal spectrum area of the first one and the second occupied more than 98% of the total area. The different components of particle size in the rock have leaded to the variation of NMR relaxation properties. The average porosity of granite is 1.79%, t'2 is 26.1 ms and average irreducible saturation is 88.5%. The structural characteristics of the rock visually shown by the MRI, have provided the information for analysis of the rock pore structure. The variation law of NMR characteristic in rock and its MRI results have provided experimental database for research of the rock microstructure and rock deterioration mechanism.关键词
核磁共振/孔隙结构/弛豫时间/核磁共振成像Key words
nuclear magnetic resonance (NMR)/ pore structure/ relaxation time/ magnetic resonance imaging (MRI)分类
建筑与水利引用本文复制引用
周科平,李杰林,许玉娟,张亚民..基于核磁共振技术的岩石孔隙结构特征测定[J].中南大学学报（自然科学版）,2012,43(12):4796-4800,5.基金项目
国家自然科学基金资助项目(51074178) （51074178）
高等学校博士学科点专项科研基金资助项目(20090162110036) （20090162110036）
