EXIT OF GROUND WATERS ON DRAINAGE BOUNDARIES

A known analytical solution provide the location of the exit point of the free surface of ground waters as a function of the slope angle and the reduced discharge in a form of a finite integral. This integral was evaluated numerically and a substitute polynomial equation provided to determine the function. Based on the exact position of the exit point, a new discharge formula free from any preliminary assumptions is derived. It covers the range of slope angles from near 0 deg to 180 deg for infinitely long aquifers. It was found that the same formula is applicable to certain finite lengths. Applicability of the function for the location of the exit point and the discharge formula for each dams is considered. It is explained that a hydraulically equivalent rectangle, which substitutes the upstream prism, must have the width of the base substantially smaller than that used in older theories. /ASCE/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Browzin, B S
• Publication Date: 1976-2

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 159-173
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 102
  • Issue Number: GT2
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Analysis; Aquifers; Drainage; Earth dams; Formulas; Groundwater; Hydraulics; Polynomials; Slopes; Theory
• Uncontrolled Terms: Boundaries
• Old TRIS Terms: Discharge
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00134049
• Record Type: Publication
• Report/Paper Numbers: ASCE #11909
• Files: TRIS
• Created Date: Jun 23 1976 12:00AM