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Analytical Solutions for Levee Underseepage Analysis: Straight and Curved Levee Sections with an Infinite Blanket
Existing analytical solutions for levee underseepage analysis typically use a "blanket theory" approach that is formulated based on the assumption of two-dimensional planar seepage. Although this assumption is reasonable when applied to a long, straight levee reach, it cannot account in a rational way for three-dimensional seepage effects. In particular, many levees that are constructed to follow the natural alignment of rivers have three-dimensional curvatures that tend to either concentrate or diffuse the levee underseepage that occurs. This paper presents the results from an analytical equation derivation that can be used to perform levee underseepage analysis for either straight or curved levee sections with an infinite blanket layer. Three types of levee configurations, straight, convex, and concave, were considered in the derivation, using planar flow and radial flow models. The closed-form analytical equations that result can be used to quantify pressure head beneath the blanket layer and the quantity of seepage through the levee foundation, for each of the levee configurations that was analyzed (straight, convex, and concave).
Analytical Solutions for Levee Underseepage Analysis: Straight and Curved Levee Sections with an Infinite Blanket
Existing analytical solutions for levee underseepage analysis typically use a "blanket theory" approach that is formulated based on the assumption of two-dimensional planar seepage. Although this assumption is reasonable when applied to a long, straight levee reach, it cannot account in a rational way for three-dimensional seepage effects. In particular, many levees that are constructed to follow the natural alignment of rivers have three-dimensional curvatures that tend to either concentrate or diffuse the levee underseepage that occurs. This paper presents the results from an analytical equation derivation that can be used to perform levee underseepage analysis for either straight or curved levee sections with an infinite blanket layer. Three types of levee configurations, straight, convex, and concave, were considered in the derivation, using planar flow and radial flow models. The closed-form analytical equations that result can be used to quantify pressure head beneath the blanket layer and the quantity of seepage through the levee foundation, for each of the levee configurations that was analyzed (straight, convex, and concave).
Analytical Solutions for Levee Underseepage Analysis: Straight and Curved Levee Sections with an Infinite Blanket
Benjasupattananan, Sittinan (author) / Meehan, Christopher L. (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Geo-Congress 2013 ; 1129-1138
2013-02-25
Conference paper
Electronic Resource
English
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