TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

DEPTH OF FLOW AS A DESIGN CRITERION FOR CHANNELS WITH ARTIFICIAL LINERS

Accession Number:

00204219

Record Type:

Component

Abstract:

SIX ARTIFICIAL LINERS WERE INVESTIGATED TO DEVELOP DESIGN CRITERIA FOR ERODIBLE CHANNELS. LINERS INSTALLED ON FLAT-BOTTOM EARTH CHANNELS, 2 FT WIDE, 60 FT LONG, AND ON SLOPES UP TO 0.125 WERE SUBJECTED TO INCREASING FLOWS TO CHANNEL FAILURE. TEST SECTIONS OF SAND TO HEAVY CLAY WERE INSERTED IN THE CHANNEL FLOOR AND THE EFFECTIVENESS OF THE LINERS OBSERVED. MEASUREMENTS CONSISTED OF FLOW RATES, CHANNEL AND WATER SURFACE PROFILES, AND TEST SECTION EROSION. FOR EACH FLOW RATE, VALUES WERE DETERMINED FOR DEPTH OF FLOW, MEAN VELOCITY, HYDRAULIC RADIUS, SLOPE, AND EROSION. FAILURE OF THE TEST SECTIONS AND LINERS WAS NOTED. A REGRESSION ANALYSIS WAS USED TO FIT THE DATA FOR EACH LINER TO LOG V= LOG A + B LOG R + C LOG S. A HIGH CORRELATION OF VARIABLES WAS OBTAINED. THE COEFFICIENT AND EXPONENTS FOR THIS FORMULA ARE INCLUDED. MAXIMUM PERMISSIBLE DEPTH (A CRITERION EXPRESSING FAILURE) WAS CONSIDERED TO BE A FUNCTION OF SLOPE. THESE VARIABLES WERE EXAMINED IN A DEPTH-SLOPE PLOT WITH UPPER AND LOWER PARALLEL LIMITS WHICH REFLECT THE EROSION CHARACTERISTICS OF THE TEST SOILS. THE DEPTH CRITERION, ALONG WITH THE FLOW RATING CURVES, CAN BE APPLIED TO THE DESIGN OF ARTIFICIALLY LINED CHANNELS OF ANY SHAPE. /AUTHOR/

Supplemental Notes:

Paper sponsored by Committee on Surface Drainage of Highways and presented at the 48th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

Monograph Title:

Surface drainage of highways

Monograph Accession #:

01410204

Authors:

Mcwhorter, J C
Carpenter, T G
CLARK, R N

Pagination:

pp 18-24

Publication Date:

1969

Serial:

Highway Research Record

Issue Number: 261
Publisher: Highway Research Board

Media Type:

Digital/other

Features:

Figures (9) ; References (6)

Old TRIS Terms:

Subject Areas:

Data and Information Technology; Design; Geotechnology; Highways; Hydraulics and Hydrology

Files:

TRIS, TRB

Created Date:

Aug 4 1994 12:00AM

More Articles from this Serial Issue: