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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4474
Title: Determination of critical head in soil piping
Authors: Ojha, C. S. P.
Singh V.P.
Adrian D.D.
Published in: Journal of Hydraulic Engineering
Abstract: One of the main mechanisms of failure of levees is a phenomenon called "piping," which generally begins with the formation of a sand boil at the leeward side of the levee, and has been frequently observed to proceed upstream along the base of the levee through a slit formation. The issue of most important concern is to estimate the critical head that could promote the occurrence of piping. Considering the flow through porous media and coupling it with Bernoulli's equation and a critical tractive stress condition, a model is developed for the critical head. Using appropriate transformations, the proposed model takes on a form which supports Bligh's empirical findings. Another model based on critical velocity is also developed to estimate the critical head. The functional form of these two models is evaluated using the critical head versus porosity data from a number of laboratory studies conducted in the Netherlands. These models were found to perform better than did Terzaghi's model.
Citation: Journal of Hydraulic Engineering(2003), 129(7): 511-518
URI: https://doi.org/10.1061/(ASCE)0733-9429(2003)129:7(511)
http://repository.iitr.ac.in/handle/123456789/4474
Issue Date: 2003
Keywords: Fluid mechanics
Head
Hydraulic models
Levees
Porous media
Salt water intrusion
Seepage
Tractive forces
ISSN: 7339429
Author Scopus IDs: 7004206177
57211219633
7004483274
Author Affiliations: Ojha, C.S.P., Dept. of Civil Engineering, IIT Roorkee, Roorkee, Uttaranchal 247667, India
Singh, V.P., Dept. of Civil/Environmental Eng., Louisiana State Univ., Baton Rouge, LA 70803, United States
Adrian, D.D., Dept. of Civil/Environmental Eng., Louisiana State Univ., Baton Rouge, LA 70803, United States
Corresponding Author: Ojha, C.S.P.; Dept. of Civil Engineering, IIT Roorkee, Roorkee, Uttaranchal 247667, India
Appears in Collections:Journal Publications [CE]

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