Numerical Analysis of Seepage under Two Hydraulic Structures Fou on Anisotropic Soil

Document Type : Original Article

Author

Faculty of Engineering, Zagazig University

Abstract

Finite element analyses have been performed on the problem of two-dimensional confined
seepage flow beneath two water retaining structures in series. The two structures separated by
intermediate filter with concrete blocks and founded on anisotropic pervious layer. The objective of
this study is to determine the effect of anisotropic soil permeability on the seepage cliaracteristics
such as uplift pressures, exit gradients and seepage discharge. It's found that nearly no effect on the
uplift pressures under the two floors. Considerable increases in downstream exit gradient, \\i2 and in
relative discharge for the increase in relative permeability, kx/ky. On the other hand, considerable
decreases in the intermediate exit gradient, lei, for the increase in relative permeability,

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