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Volume 33 Issue 9
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WU Li-zhou, HUANG Run-qiu. Analytical analysis of coupled seepage in unsaturated soils considering varying surface flux[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(9): 1370-1375.
Citation: WU Li-zhou, HUANG Run-qiu. Analytical analysis of coupled seepage in unsaturated soils considering varying surface flux[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(9): 1370-1375.
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Analytical analysis of coupled seepage in unsaturated soils considering varying surface flux

  • (State Key Laboratory of Geological Hazard Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu 610069, China)

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  • Published Date: September 14, 2011
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    • Abstract
  • Based on the assumption that water content and permeability coefficient are exponential functions of pore-water pressure, the Fourier transform is used to obtain an analytical solution to one-dimensional coupled rainfall infiltration and deformation in unsaturated soils with varying surface rainfall flux. When the gradually increasing rainfall intensity is less than the saturated coefficient of permeability, a flux boundary condition is adopted. When the rainfall intensity is larger than the infiltration capacity of the saturated soils, a pore-water pressure boundary condition is used. The analytical solution can consider varying flux boundary conditions, pressure boundary conditions and arbitrary initial conditions. The calculated results of a case study show that the coupling effect has a markable effect on the pressure distribution for the transient unsaturated seepage. The coupling effect dissipates if the steady-state infiltration occurs.
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    • References (16)
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