LEVEE UNDERSEEPAGE ANALYSIS FOR SPECIAL FOUNDATION CONDITIONS. FINAL REPORT

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 fintie difference form for three special cases of boundary condition. 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; and (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.

• Corporate Authors:

  Michigan State University, East Lansing

  Division of Engineering Research
  East Lansing, MI  United States  48824

  U.S. Army Waterways Experiment Station

  Geotechnical Laboratory, 3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199
• Authors:
  • Wolff, T F
• Publication Date: 1989-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 152 p.

Subject/Index Terms

• TRT Terms: Boundary value problems; Computer programs; Differential equations; Finite differences; Forecasting; Foundations; Geometry; Levees; Mathematical analysis; Permeability; Repairing; Seepage; Thickness
• Uncontrolled Terms: Boundary conditions; Repairs
• Old TRIS Terms: Foundation conditions; Underseepage
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; Maintenance and Preservation; Marine Transportation; I42: Soil Mechanics; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00488537
• Record Type: Publication
• Report/Paper Numbers: Tech Rept REMR-GT-11
• Contract Numbers: DACW39-87-K-0041
• Files: TRIS
• Created Date: Oct 31 1990 12:00AM