Calibration test for total suction wetting curve of filter paper

BAI Fu-qing   LIU Si-hong   YUAN Jiao

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Calibration test for total suction wetting curve of filter paper

更新时间：2026-06-25

- Calibration test for total suction wetting curve of filter paper
- Vol. 32, Issue 8, (2011)
- 作者机构：
  
  河海大学水利水电学院,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411.99
- Online First：16 August 2011，
  
  Published：2011
- 稿件说明：
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BAI Fu-qing LIU Si-hong YUAN Jiao. Calibration test for total suction wetting curve of filter paper[J]. 2011, 32(8).
DOI：

BAI Fu-qing LIU Si-hong YUAN Jiao. Calibration test for total suction wetting curve of filter paper[J]. 2011, 32(8). DOI：

摘要

滤纸法是一种间接的吸力测试方法，测试结果准确与否首先取决于滤纸的吸力率定曲线。介绍了滤纸法的基本工作原理，总结了滤纸法在国内外的研究现状。利用NaCl盐溶液法率定了国产双圈No.203型滤纸的总吸力吸湿率定曲线，给出了总吸力率定曲线的双线性拟合方程。分别比较了双圈No.203型滤纸与Whatman’s No.42型滤纸的总吸力和基质吸力率定曲线，指出两种滤纸的基质吸力率定曲线基本一致，以及国产双圈No.203型滤纸总吸力率定曲线的转点含水率更高的特点

Abstract

The filter paper method is one of indirect methods for measuring soil suction. The accuracy of the measurement is highly dependent on the suction calibration for the testing filter paper. The basic principle of the filter paper method is introduced and its relevant studies are reviewed. A kind of domestic filter paper

named “Double-circle No.203”

is selected for the total suction calibration test with the sodium chloride solution method; and the result of the calibration test is well fitted by a bilinear regression curve. The suction calibration curves of the domestic filter paper with a brand name of “Double-circle No.203” are compared with those of a typical abroad filter paper of “Whatman’s No.42”. It is found that the matric suction calibration curves of the two filter papers are nearly the same

while the break-point water content of the total suction calibration curve of the “Double-circle No.203” filter paper is higher than that of the “Whatman’s No.42” filter paper.

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