Underseepage analysis of levees on two-layer and three-layer foundation

Underseepage analysis of levees on two-layer and three-layer foundation

A simplified numerical model for the analysis of levee underseepage is developed and presented. Idealization of the subsurface hydrogeologic conditions was achieved using two-layer and three-layer representation of the flow domain. Data from Magnolia levee, located in Magnolia, Ohio, were used to de...

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Bibliographic Details
Published in:Computers and geotechnics Vol. 18; no. 2; pp. 85 - 107
Main Authors: Gabr, M.A., Wolff, T.F., Brizendine, A.L., Taylor, H.M.
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 1996
Elsevier
Subjects:
Anisotropy
Blanketing
Computer simulation
Domains
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Engineering geology
Exact sciences and technology
Finite element method
Foundations
Geotechnics
Hydraulics
Hydrology
Islands
Levees
Mathematical models
Numerical analysis
Permeability
Piezometers
Q1
Ohio
United States
North America
Illinois
two-layer models
seepage
numerical models
levees
Online Access:Get full text
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Summary:A simplified numerical model for the analysis of levee underseepage is developed and presented. Idealization of the subsurface hydrogeologic conditions was achieved using two-layer and three-layer representation of the flow domain. Data from Magnolia levee, located in Magnolia, Ohio, were used to demonstrate the model applicability by comparing exit hydraulic gradient (i) values from the simplified model to predictions from 2-D finite element analysis (FEA). Results from the simplified model indicated that i values were merely dependent on the ratio of the foundation permeability (K fx) to the blanket permeability (K by). The i values from the FEA closely matched those from the simplified model for K fx/K by ratios less than 2000 and assuming permeability anisotropic ratio (rk) = 1. Piezometer data from the Sny Island levee, located in Quincy, Illinois, were used to demonstrate the applicability of the three-layer model.
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ISSN:0266-352X
1873-7633
DOI:10.1016/0266-352X(95)00024-5