Please use this identifier to cite or link to this item:
https://hdl.handle.net/11681/4432| Title: | Levee underseepage analysis for special foundation conditions |
| Authors: | Repair, Evaluation, Maintenance, and Rehabilitation Research Program (U.S.) Repair, Evaluation, Maintenance, and Rehabilitation Research Program (U.S.) Michigan State University. Wolff, Thomas F. |
| Keywords: | Analyses Foundations Geometry evaluation Irregular boundaries Levees Numerical methods Finite element method Permeability Rehabilitation Underseepage |
| Publisher: | Geotechnical Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Description: | Technical Report Abstract: This report describes a research study in which techniques were developed for prediction of underseepage conditions for special cases of levee and foundation geometry. The differential equations for levee underseepage were derived and programmed in finite difference form for three special cases of boundary conditions. The developed programs allow analyses that are not restricted to the boundary conditions assumed in the conventional, closed form solution, i.e., two foundation layers of uniform thickness with horizontal boundaries. The three special cases of foundation conditions that can be analyzed are as follow: (A.) Foundations consisting of three layers of uniform thickness with horizontal boundaries and differing horizontal and vertical permeability in each layer. (B.) Foundations consisting of two layers of nonuniform thickness with irregular boundaries. (C.) Levee reaches where the levee alignment bends or forms a corner. Capabilities of the techniques and programs are demonstrated by comparing theoretical solutions to observed performance at eight field locations where piezometric data are available. At each location, the field permeability ratio was estimated by varying program input and seeking a match between the program output and actual observed performance. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/4432 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TR-REMR-GT-11.pdf | 8.81 MB | Adobe PDF |  View/Open |