Fast-nondestructive measurement of axial slice water content and water distribution with NMR SFG-MSCPMG sequence
文献类型：期刊论文
| 作者 | Wu, Guangshui1; Tian, Huihui2; Yan, Rongtao1; Wang, Shuqi1 |
| 刊名 | MAGNETIC RESONANCE IMAGING
 |
| 出版日期 | 2024 |
| 卷号 | 105页码:1-9 |
| 关键词 | NMR SFG-MSCPMG sequence Axial slice Water content Pore water distribution |
| ISSN号 | 0730-725X |
| DOI | 10.1016/j.mri.2023.09.008 |
| 英文摘要 | Measuring hydraulic conductivity by instantaneous profile method needs to detect the pore water content of soil at different positions, but most of the detecting methods will disturb the soil sample. In the study, the axial slice scanning of soil samples was carried out by using static filed gradient multi-slice Carr-Purcell-Meiboom-Gill (SFG-MSCPMG) sequence of nuclear magnetic resonance (NMR) technology, which can nondestructively determine water content and distribution at different positions of soil column. In this experiment, three clays were used to illustrate the relationship between NMR test results and oven drying results of water content. The results show that there is a good linear relationship between the NMR signal and water content. Combining mercury intrusion porosimetry (MIP) data, the transverse surface relaxivity parameters (rho 2) of clays are obtained. With rho 2 = 41.90 mu m/s the T2 distribution curve of pore water in the ordinary clay can be converted into the pore water distribution curve, which is in good agreement with that obtained with MIP. Nevertheless, it is found that the T2 distribution curve of pore water in expansive clay obtained with NMR technique is more suitable for analyzing the average pore water distribution because of the fast exchange of pore water between the interlayers, intra-aggregates and inter-aggregates in expansive clay. |
| 资助项目 | Department of Science and Technology of Guangxi[AD20325010] ; National Natural Science Foundation of China (NSFC)[42072312] ; National Natural Science Foundation of China (NSFC)[51939011] |
| WOS研究方向 | Radiology, Nuclear Medicine & Medical Imaging |
| 语种 | 英语 |
| WOS记录号 | WOS:001100650200001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39944]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Tian, Huihui |
| 作者单位 | 1.Guilin Univ Technol, Guangxi Key Lab Geomech & Geotech Engn, Guilin 541004, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Guangshui,Tian, Huihui,Yan, Rongtao,et al. Fast-nondestructive measurement of axial slice water content and water distribution with NMR SFG-MSCPMG sequence[J]. MAGNETIC RESONANCE IMAGING,2024,105:1-9. |
| APA | Wu, Guangshui,Tian, Huihui,Yan, Rongtao,&Wang, Shuqi.(2024).Fast-nondestructive measurement of axial slice water content and water distribution with NMR SFG-MSCPMG sequence.MAGNETIC RESONANCE IMAGING,105,1-9. |
| MLA | Wu, Guangshui,et al."Fast-nondestructive measurement of axial slice water content and water distribution with NMR SFG-MSCPMG sequence".MAGNETIC RESONANCE IMAGING 105(2024):1-9. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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