Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/60003
Title: | Transient measurement of hydraulic properties of unsaturated soils | Authors: | Shi, Xiang | Keywords: | DRNTU::Engineering::Civil engineering | Issue Date: | 2014 | Abstract: | Many geo-environmental problems involve the study of mass flux of contaminants transported to the groundwater system through the unsaturated soil zone above ground water table. These problems always happen near the ground surface, so the estimation of permeability of unsaturated soil is of paramount interest. The objectives of the project are to evaluate models used to determine coefficient of permeability of unsaturated soil. The outflow method developed by Gardner (1956) was evaluated and used as direct measurement of unsaturated permeability. Twelve existing models for unimodal unsaturated permeability and three proposed models for bimodal unsaturated permeability were evaluated with measured data. Three new models namely, SCM ,SBM and SMM were proposed by combing available SWCC (i.e. Satyanaga) and available integration methods (i.e., Childs and Collis-George, Burdine and Mualem). Results from the study show that outflow method provides good prediction for unsaturated permeability of soil. The models for soil with unimodal characteristic were able to estimate the measured unsaturated permeability of soils with unimodal characteristic. Three proposed models performed quite well in describing the bimodal characteristics of soil. | URI: | http://hdl.handle.net/10356/60003 | Schools: | School of Civil and Environmental Engineering | Rights: | Nanyang Technological University | Fulltext Permission: | restricted | Fulltext Availability: | With Fulltext |
Appears in Collections: | CEE Student Reports (FYP/IA/PA/PI) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
fyp report_Transient measurement of hydraulic properties of unsaturated soils.pdf Restricted Access | FYP report | 4.07 MB | Adobe PDF | View/Open |
Page view(s)
293
Updated on Mar 27, 2024
Download(s) 50
25
Updated on Mar 27, 2024
Google ScholarTM
Check
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.