水利水电科技进展2026，Vol.46Issue(2)：91-96,6.DOI:10.3880/j.issn.1006-7647.2026.02.012
基于低场核磁共振技术的非织造土工织物有效孔径测定
Determination of effective pore size of nonwoven geotextiles based on low-field nuclear magnetic resonance technology
摘要
Abstract
In order to accurately determine the effective pore size of needle-punched nonwoven geotextiles,the wet sieving method and the low-field nuclear magnetic resonance(NMR)technology were used to carry out experimental research.The relationship curves between the cumulative percentage and the pore size were drawn,and the effective pore size value of nonwoven geotextiles was obtained and compared.The reliability of the low-field NMR measurement results was verified by combining the NMR imaging technology and Python programming pixel recognition method.The results show that the low-field NMR measurement technology with hydrogen atom as probe can accurately determine the effective pore size of nonwoven geotextiles.The combination of the NMR imaging technology and Python programming pixel recognition method can verify the accuracy of the low-field NMR technology in determining the effective pore size of nonwoven geotextiles.The low-field NMR measurement technology can avoid the shortcomings of the wet sieving method and improve the accuracy of the effective pore size measurement results.关键词
非织造土工织物/孔径分布/孔隙度/有效孔径/低场核磁共振技术Key words
nonwoven geotextiles/pore size distribution/porosity/effective aperture/low-field nuclear magnetic resonance technology引用本文复制引用
张宪雷,杨鹏鹏,马少帅..基于低场核磁共振技术的非织造土工织物有效孔径测定[J].水利水电科技进展,2026,46(2):91-96,6.基金项目
国家自然科学基金项目(51609087,51709114) （51609087,51709114）
河南省科技厅面上基金项目(252300420051) （252300420051）
河南省研究生教育改革与质量提升工程项目(YJS2026YBGZZ03) （YJS2026YBGZZ03）
