Accession Number : ADA300642

Title :   LEVSEEP: Analysis Software for Levee Underseepage and Rehabilitation.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB

Personal Author(s) : Brizendine, Anthony L. ; Taylor, Hugh M., Jr. ; Gabr, M. A.

PDF Url : ADA300642

Report Date : JUL 1995

Pagination or Media Count : 188

Abstract : The computer program LEVSEEP version 3.0 is presented for use in the analysis of levee underseepage. This version of the program includes a two-layer analysis model for levees with a top blanket over a pervious foundation. The software calculates seepage flow and substratum pressure for either physical and geometric properties (initial conditions) or field piezowmeter readings; analyzes the effects of various control measures (namely, landside berms, riverside blankets, cutoffs, and relief wells); plots cross sections, piezometer data, and control measures; provides quantity and cost estimates of each of these control measure alternatives; and gives a complete summary of all calculations. The procedures for berm analysis employed within LEVSEEP reflect the current Corps guidance discussed in EM 1110-2-1913 (Headquarters, Department of the Army 1978). The procedures for riverside blanket analysis are as presented in TM 3A24 (U.S. Army Engineer Waterways Experiment Station 1956). Procedures for analysis of cutoffs are based on the method of fragments as presented by Harr (1962). The procedures for relief well system analysis reflect Corps guidance as presented in EM 1110-2-1913. Specific equations and procedures used for well analysis were taken from TM 3A24 and Engineer Bulletin 55-11 (Headquarters, Department of the Army 1955). The well procedure is for infinite, partially penetrating, or fully penetrating well systems under artesian flow; it does not apply to finite length systems or pumped systems. Example problems and case studies are presented LEVSEEP provides a convenient analysis tool that should allow designers to approximately model actual field conditions. However, flood protection is a complex system involving design, construction, maintenance, and performance evaluation of levees.

Descriptors :   *COMPUTER PROGRAMS, *SOIL MECHANICS, *FLOOD CONTROL, *LEVEES, *SEEPAGE, *HYDRAULIC CONDUCTIVITY, PRESSURE GRADIENTS, PERMEABILITY, FINITE ELEMENT ANALYSIS, SAND, TOPOGRAPHY, COSTS, REPAIR, FLOW RATE, CASE STUDIES, CLAY, SITE INVESTIGATIONS, DESIGN CRITERIA, SOIL EROSION, WATER WELLS, LANDSLIDES, FLOOD PLAINS, HEAD(FLUID MECHANICS), SILT, PIEZOMETERS.

Subject Categories : Hydrology, Limnology and Potamology
      Seismology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE