Effect of soil water retention model on slope stability analysis

Muhammad Mukhlisin, Marlin Ramadhan Baidillah, Mohd. Raihan Taha, Ahmed El-Shafie

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Understanding of the relationship between volumetric water content (θ) and soil capillary pressure (ψ), and between unsaturated hydraulic conductivity K and ψ is important in the analysis of rainwater infiltration into soil and its effect to slope stability. These relationships are known as the water retention curve and the hydraulic conductivity function, respectively. Much soil water retention-hydraulic conductivity models have been proposed such as Brooks-Corey (BC), van Genuchten (VG) that were derived based on empirical fitting curve, and Lognormal (LN) distribution model derived based on soil pore radius distribution. In this study, numerical simulations were performed using the three models to estimate the extent of rainwater infiltration into an unsaturated slope; the formation of a saturated zone, and the change in slope stability. Comparisons were made in terms of soil moisture, water movement phenomena in a soil slope, and the slope stability characteristic. The results of the numerical simulation shows that although BC, VG and LN models have different value of initial condition, the outcome of soil moisture content, water movement and slope stability characteristic are very similar during rainstorm event.

Original languageEnglish
Pages (from-to)4629-4635
Number of pages7
JournalInternational Journal of Physical Sciences
Volume6
Issue number19
Publication statusPublished - 16 Sep 2011

Fingerprint

Slope stability
soils
slopes
Hydraulic conductivity
Soils
Water
hydraulics
water
Soil moisture
soil moisture
Infiltration
infiltration
trucks
conductivity
moisture content
rainstorms
Capillarity
Computer simulation
Curve fitting
Water content

Keywords

  • Slope stability analysis
  • Soil hydraulic properties
  • Water retention-hydraulic conductivity mode

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Electronic, Optical and Magnetic Materials

Cite this

Effect of soil water retention model on slope stability analysis. / Mukhlisin, Muhammad; Baidillah, Marlin Ramadhan; Taha, Mohd. Raihan; El-Shafie, Ahmed.

In: International Journal of Physical Sciences, Vol. 6, No. 19, 16.09.2011, p. 4629-4635.

Research output: Contribution to journalArticle

Mukhlisin, M, Baidillah, MR, Taha, MR & El-Shafie, A 2011, 'Effect of soil water retention model on slope stability analysis', International Journal of Physical Sciences, vol. 6, no. 19, pp. 4629-4635.
Mukhlisin, Muhammad ; Baidillah, Marlin Ramadhan ; Taha, Mohd. Raihan ; El-Shafie, Ahmed. / Effect of soil water retention model on slope stability analysis. In: International Journal of Physical Sciences. 2011 ; Vol. 6, No. 19. pp. 4629-4635.
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