Effective unsaturated hydraulic conductivity of layered sands

Tian-Chyi J Yeh, D. J. Harvey

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

The unsaturated hydraulic conductivity, K(ψ), of two homogeneous sands and one layered sand composed of the two homogeneous sands was measured using the steady-state flux control method. The averaged K(ψ) curves of the two homogeneous sands using a direct averaging approach were compared with the measured layered sand K(ψ) data. The result shows that the geometric mean of hydraulic conductivity-suction curves of the coarse and medium sands approximates the measured hydraulic conductivity-suction curve of the layered sand. The observed suction variance and effective hydraulic conductivity were compared with expressions developed from a stochastic theory. The results support the stochastic approach. -from Authors

Original languageEnglish (US)
Pages (from-to)1271-1279
Number of pages9
JournalWater Resources Research
Volume26
Issue number6
DOIs
StatePublished - 1990

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unsaturated hydraulic conductivity
Hydraulic conductivity
hydraulic conductivity
Sand
sand
suction
control methods
Fluxes

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

Cite this

Effective unsaturated hydraulic conductivity of layered sands. / Yeh, Tian-Chyi J; Harvey, D. J.

In: Water Resources Research, Vol. 26, No. 6, 1990, p. 1271-1279.

Research output: Contribution to journalArticle

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AB - The unsaturated hydraulic conductivity, K(ψ), of two homogeneous sands and one layered sand composed of the two homogeneous sands was measured using the steady-state flux control method. The averaged K(ψ) curves of the two homogeneous sands using a direct averaging approach were compared with the measured layered sand K(ψ) data. The result shows that the geometric mean of hydraulic conductivity-suction curves of the coarse and medium sands approximates the measured hydraulic conductivity-suction curve of the layered sand. The observed suction variance and effective hydraulic conductivity were compared with expressions developed from a stochastic theory. The results support the stochastic approach. -from Authors

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