![](/images/graphics-bg.png)
Correction Method for Hydraulic Conductivity Measurements Made Using a Fixed Wall Permeameter
Joint Authors
Luo, Qiang
Liu, Mengshi
Wang, Tengfei
Wu, Peng
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-13
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Hydraulic conductivity measurement through a fixed wall permeameter is a common practice to obtain the fluid transmissibility characteristics of soil matrix; however, sidewall leakage due to rigid wall effect may significantly influence the observed values for coarse-grained soils.
In this study, the boundary flow error was identified through characterizing the geometrical properties of voids adjacent to the sidewall, and a parameter known as the boundary void ratio (eb) was proposed to account for this effect.
The findings suggest that a fixed wall cell containing coarse soils would unavoidably generate extra voids at the interface between soil grains and inner rigid wall, contributing to a larger eb at the wall than void ratio within the soil bed; the measured hydraulic conductivity is increased primarily due to the apparatus-induced error.
A two-dimensional geometric model was then established to estimate the eb value for uniformly sized coarse soils confined by a rigid permeameter wall, based on which a method was obtained for eliminating the boundary flow error from a fixed wall cell.
The mathematical method was finally validated against experimental data from existing literature.
It can be concluded that the boundary condition at sidewall featuring unwanted gaps lead to overestimation of the coefficient of permeability; however, the proposed correction method could adequately eliminate the boundary flow error for uniformly sized coarse-grained soils tested within a rigid wall cell.
American Psychological Association (APA)
Luo, Qiang& Liu, Mengshi& Wang, Tengfei& Wu, Peng. 2020. Correction Method for Hydraulic Conductivity Measurements Made Using a Fixed Wall Permeameter. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1193100
Modern Language Association (MLA)
Luo, Qiang…[et al.]. Correction Method for Hydraulic Conductivity Measurements Made Using a Fixed Wall Permeameter. Mathematical Problems in Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1193100
American Medical Association (AMA)
Luo, Qiang& Liu, Mengshi& Wang, Tengfei& Wu, Peng. Correction Method for Hydraulic Conductivity Measurements Made Using a Fixed Wall Permeameter. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1193100
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1193100