Research Article
Mar 1972
Seepage from Trenches through Nonhomogeneous Soils
Publication: Journal of the Irrigation and Drainage Division
Volume 98, Issue 1
Abstract
Infiltration from shallow trenches of arbitrary cross-sectional shape and through a layer of nonhomogeneous soil was studied analytically. The soil layer is underlain by a bed of gravel that is represented mathematically by a line of constant pressure. The basic flow equations were derived and the corresponding boundary value problems constructed by use of the perturbation theory. The effect of an exponential variation of the hydraulic conductivity on the quantity of seepage and the free surface is determined. A comparison with the case of constant permeability is made for different layer thicknesses. A triangular trench was chosen to indicate the effect of trench dimensions on the amount of seepage through layers of nonuniform permeability. Curves are presented to illustrate this effect.
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Published In
Journal of the Irrigation and Drainage Division
Volume 98 • Issue 1 • March 1972
Pages: 13 - 23
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: Mar 1972
Published online: Feb 11, 2021
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Authors
Affiliations
Ahmed El Nimur
Res. Assoc.; Water Resources Dept., Desert Inst., Mataria, Cairo, UAR
Robert L. Street, M.ASCE
Prof.; Civ. Engrg., Stanford Univ., Stanford, CA
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.