One-Dimensional Vacuum Steady Seepage Model of Unsaturated Soil and Finite Difference Solution
Joint Authors
Liu, Hongyan
Wang, Guihe
Huang, Feng
Lyu, Jianguo
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-03-05
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Vacuum tube dewatering method and light well point method have been widely used in engineering dewatering and foundation treatment.
However, there is little research on the calculation method of unsaturated seepage under the effect of vacuum pressure which is generated by the vacuum well.
In view of this, the one-dimensional (1D) steady seepage law of unsaturated soil in vacuum field has been analyzed based on Darcy’s law, basic equations, and finite difference method.
First, the gravity drainage ability is analyzed.
The analysis presents that much unsaturated water can not be drained off only by gravity effect because of surface tension.
Second, the unsaturated vacuum seepage equations are built up in conditions of flux boundary and waterhead boundary.
Finally, two examples are analyzed based on the relationship of matric suction and permeability coefficient after boundary conditions are determined.
The results show that vacuum pressure will significantly enhance the drainage ability of unsaturated water by improving the hydraulic gradient of unsaturated water.
American Psychological Association (APA)
Huang, Feng& Lyu, Jianguo& Wang, Guihe& Liu, Hongyan. 2017. One-Dimensional Vacuum Steady Seepage Model of Unsaturated Soil and Finite Difference Solution. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-7.
https://search.emarefa.net/detail/BIM-1192744
Modern Language Association (MLA)
Huang, Feng…[et al.]. One-Dimensional Vacuum Steady Seepage Model of Unsaturated Soil and Finite Difference Solution. Mathematical Problems in Engineering No. 2017 (2017), pp.1-7.
https://search.emarefa.net/detail/BIM-1192744
American Medical Association (AMA)
Huang, Feng& Lyu, Jianguo& Wang, Guihe& Liu, Hongyan. One-Dimensional Vacuum Steady Seepage Model of Unsaturated Soil and Finite Difference Solution. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-7.
https://search.emarefa.net/detail/BIM-1192744
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1192744