基于低场核磁共振技术的非织造土工织物有效孔径测定OA
Determination of effective pore size of nonwoven geotextiles based on low-field nuclear magnetic resonance technology
为精确测定针刺非织造土工织物有效孔径,运用湿筛法和低场核磁共振技术开展了试验研究,分别绘制了累积百分率与孔径尺寸之间的关系曲线,得到非织造土工织物的有效孔径值,并进行了对比分析;利用低场核磁共振成像技术与Python程序像素点识别相结合的方法验证了低场核磁共振测量技术成果的可靠性.结果表明:以氢原子为探针的低场核磁共振测量技术能够精确测定非织造土工织物的有效孔径;低场核磁共振成像技术和Python程序像素点识别相结合的方法可验证低场核磁共振技术测定非织造土工织物有效孔径的准确性;低场核磁共振测量技术可避免湿筛法的缺点,提高有效孔径测定成果的准确性.
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.
张宪雷;杨鹏鹏;马少帅
华北水利水电大学水利学院松花江水力发电有限公司吉林白山发电厂国网新源集团有限公司新安江水力发电厂
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
nonwoven geotextilespore size distributionporosityeffective aperturelow-field nuclear magnetic resonance technology
《水利水电科技进展》 2026 (2)
91-96,6
国家自然科学基金项目(51609087,51709114)河南省科技厅面上基金项目(252300420051)河南省研究生教育改革与质量提升工程项目(YJS2026YBGZZ03)
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