
doi: 10.1007/bf00136442
An analytical solution is derived for a two-dimensional soil with a sloping surface under steady and water-saturated flow conditions. The soil was assumed to consist of several layers where each layer was horizontally stratified. Moreover, the lower layer was assumed to be bounded by an impermeable barrier, whereas the soil surface was assumed to be of constant slope (terraced type) or of an arbitrary configuration. Each layer was considered anisotropic in nature where the hydraulic conductivity in the vertical and horizontal directions are dissimilar. Potential and stream functions were obtained and several flow nets are presented for two-layered soils with varying degrees of anisotropy. The results shown illustrate the significance of the degree of anisotropy of each soil layer on the water flow pattern, the relative flow rate as well as the volume of water passing through individual soil layers.
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