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Modeling saturated hydraulic conductivity based on soil characteristics


Citation

Mohd Soom, Mohd Amin and Ow, S. N. (1999) Modeling saturated hydraulic conductivity based on soil characteristics. In: National Conference on Engineering Smart Farming for the Next Millenium, 14-16 Mar. 1999, UPM, Serdang, Selangor. (pp. 1-9).

Abstract / Synopsis

The saturated hydraulic conductivity (KS) of several roadside cuttingswith slope failure around Universiti Putra Malaysia were studied to see how the occurrence is related to the Ks. The study was to develop a model of Ks based on soil characteristics. Ks measurements were done by using Double Ring Infiltrometer and Guelph Permeameter. A model was then developed from the soil characteristics using SAS Stepwise (MAX-R) Analysis to predict the saturated hydraulic conductivity at the slopes. The soil parameters include particle size distribution, bulk density and soil moisture contents. The best regression model developed has 5 variables for prediction of soil Ks value with R2= 0.630. The variables are percent clay, silt and sand, bulk density and soil moisture content. The model performed relatively well as seen from the predicted and the measured Ks values being scattered along the 1:1 line. This model give good estimate of saturated hydraulic conductivity of clayey soils at the top of the slopes where there was occurrence of slope failure. The extrapolated terminal infiltration rate from Double Ring Infiltrometer also provide good estimate of Ks.


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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Engineering
Publisher: Universiti Putra Malaysia
Keywords: Saturated hydraulic conductivity; Roadsides; Soil characteristics; Soil parameters; Particle size distribution; Bulk density; Soil moisture contents; Malaysia
Depositing User: Azian Edawati Zakaria
Date Deposited: 17 Jun 2015 09:55
Last Modified: 02 Nov 2017 11:02
URI: http://psasir.upm.edu.my/id/eprint/38758
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