Studies on Seepage from Canals with Partial Lining

by Kankatti Subramanya, Asst. Prof.; Dept. of Civ. Engrg., Indian Inst. of Tech., Kanpur, India,
Madhira Radha Madhav, Asst. Prof.; Dept. of Civ. Engrg., Indian Inst. of Tech., Kanpur, India,
Govinda Chandra Mishra, Res. Assoc.; Dept. of Civ. Engrg., Indian Inst. of Tech., Kanpur, India,


Serial Information: Journal of the Hydraulics Division, 1973, Vol. 99, Issue 12, Pg. 2333-2351


Document Type: Journal Paper

Discussion: Bhagavantam Dasika (See full record)

Abstract: A study of seepage from partially lined trapezoidal canals in a homogeneous isotropic porous medium of large depth is done using inversion of hodograph and Schwarz-Christoffel transformation. The two cases studied are: (1) seepage from canals whose sides are lined but bottom unlined; and (2) seepage from canals whose bottom is lined but sides unlined. It is found that for every side slope of the canal there is a particular aspect ratio at which the sides lining or bottom lining results in the same reduction of seepage. For canals having an aspect ratio more than this, bottom lining is more effective and for a lesser aspect ratio, sides lining will be more effective. For a canal having an aspect ratio of 9 and a side slope of 2.5:1, a 50% reduction in seepage is ensured by sealing the bottom. The loci of the phreatic lines, resulting in the aforementioned two cases, are also studied.

Subject Headings: Canals | Seepage | Linings | Slopes | Homogeneity | Isotropy | Porous media | Professional societies

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