Tree induced soil suction and slope stability

Rees, Stephen William; Ali, Nazri

doi:10.1080/17486025.2011.631039

Cited by 25 publications

(8 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, live plants induce soil suction by evapotranspiration. The shear strength of soil is thus increased (Indraratna et al, 2006;Pollen, 2007;Preti et al, 2010;Rees and Ali, 2012;Simon and Collison, 2002). Second, plant roots reinforce the soils by transferring the soil's shear stress into root tensile resistance through the soil-root friction (Abdi et al, 2010;Gray and Sotir, 1996;Greenway, 1987;Operstein and Frydman, 2000;Reubens et al, 2007;Schiechtl, 1980;Schmidt et al, 2001;Stokes et al, 2009;Xu et al, 2011).…”

Section: Introductionmentioning

confidence: 93%

Root systems of native shrubs and trees in Hong Kong and their effects on enhancing slope stability

Leung

Yan

Hau

et al. 2015

CATENA

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 93%

Root systems of native shrubs and trees in Hong Kong and their effects on enhancing slope stability

Leung

Yan

Hau

et al. 2015

CATENA

View full text Add to dashboard Cite

“…Vegetated slope has attracted intense interest in recent years because vegetation is considered a sustainable and environmental friendly alternative for minimizing rainfall infiltration and stabilizing soil slopes (Rees andAli 2012；Greenwood et al 2004). The presence of vegetation in soil ground reduces pore water pressure (PWP) due to root water uptake (Indraratna et al 2006;Ng et al 2013;Nyambayo and Potts 2010).…”

Section: Introductionmentioning

confidence: 99%

Analytical solutions for calculating pore-water pressure in an infinite unsaturated slope with different root architectures

Liu

Feng

2015

Can. Geotech. J.

View full text Add to dashboard Cite

Vegetation can reduce pore water pressure in soil by root water uptake. The reduction of pore water pressure results in higher shear strength but lower water permeability of soil, affecting slope stability and rainfall infiltration, respectively. Effects of different root architectures on root water uptake and hence pore water pressure distributions are not well understood. In this study, new analytical solutions for calculating pore water pressure in an infinite unsaturated vegetated slope are derived for different root architectures, namely the uniform, triangular, exponential and parabolic root architectures. Using the newly developed solutions, four series of analytical parametric analyses are carried out to improve understanding of the factors affecting root water uptake and hence that influence pore water pressure distributions. In the dry season, different root architectures can lead to large variations in pore water pressure distributions. It is found that the exponential root architecture induces the highest negative pore water pressure in the soil, followed by the triangular, uniform and parabolic root architectures. The maximum pore water pressure induced by the parabolic root architecture is about 77% of that induced by the exponential root architecture at the steady state. For a given root architecture, vegetation in completely decomposed granite (CDG, classified as silty sand) induces the highest negative pore water pressure than that in fine sand and silt. The zone influenced by vegetation can be about three to six times the root depth. In wet season, after a ten-year return period rainfall with a duration of 24 hours, different root architectures show similar pore water pressure distributions.

show abstract

“…al., 2018). Throughout the uptaking manner, plant roots assimilate dampness via chemical change and expiration (Rees et. al., 2012), which, resulted in desiccating the soil encompassing the plant roots (Rees et.…”

Section: Introductionmentioning

confidence: 99%

Influence of Alstonia Angustiloba Tree Water Uptake on Slope Stability: A Case Study at the Unsaturated Slope, Pahang, Malaysia

Zaini

Hasan

Zolkepli

2022

Preprint

View full text Add to dashboard Cite

This study examines the effects of tree water uptake at different depths and distances on the improvement of induced water uptakes in soil owing to transpiration. This study is performed to examine the tree water uptake profile in a vegetated slope with the existence of Alstonia Angustiloba mature tree at the top and the permanence of the slope during various precipitation penetration events by which the data of the tree water uptake produced within this section of the slope is recorded and implemented to evaluate the factor of safety (FOS). Slope stability analysis is further conducted to explore how plant transpiration affects slope stability. The results portrayed that, higher tree water uptake lead to the greatest FOS of the slope up to 53% (from 2.17 to 4.57). The highest tree water uptake recorded was at the slope station with the existence of the Alstonia Angustiloba tree with a depth of 0.25 m and a distance of 1.1 m from the tree. The tree water uptake utilized in this study can contribute to a carbon-free and eco-friendly approach which can be implemented globally to prevent slope catastrophe.

show abstract

Tree induced soil suction and slope stability

Cited by 25 publications

References 22 publications

Root systems of native shrubs and trees in Hong Kong and their effects on enhancing slope stability

Root systems of native shrubs and trees in Hong Kong and their effects on enhancing slope stability

Analytical solutions for calculating pore-water pressure in an infinite unsaturated slope with different root architectures

Influence of Alstonia Angustiloba Tree Water Uptake on Slope Stability: A Case Study at the Unsaturated Slope, Pahang, Malaysia

Contact Info

Product

Resources

About