Analytical solutions of pore-water pressure distributions in a vegetated multi-layered slope considering the effects of roots on water permeability

H. W. Liu; S. Feng; A. Garg; C. W.W. Ng

doi:10.1016/j.compgeo.2018.06.003

Analytical solutions of pore-water pressure distributions in a vegetated multi-layered slope considering the effects of roots on water permeability

H. W. Liu, S. Feng^*, A. Garg, C. W.W. Ng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

New analytical solutions of pore-water pressure (PWP) distributions in a vegetated multi-layered slope are derived considering the effects of roots on water permeability. PWP distributions are significantly affected by root-induced reductions in water permeability due to increases in the root volume ratio (R_v). Under drying conditions, negative PWP increases with R_v. The negative PWP induced by root water uptake increases with the desaturation coefficient (α_i) or the ratio of the transpiration rate to saturated water permeability (T_p/k_si). As the overall water permeability underneath the vegetation layer decreases, the negative PWP induced by root water uptake increases.

Original language	English
Pages (from-to)	252-261
Number of pages	10
Journal	Computers and Geotechnics
Volume	102
DOIs	https://doi.org/10.1016/j.compgeo.2018.06.003
Publication status	Published - 1 Oct 2018
Externally published	Yes

Keywords

Analytical solutions
Multi-layered
Pore-water pressure
Root water uptake
Vegetated slopes
Water permeability

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10.1016/j.compgeo.2018.06.003

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title = "Analytical solutions of pore-water pressure distributions in a vegetated multi-layered slope considering the effects of roots on water permeability",

abstract = "New analytical solutions of pore-water pressure (PWP) distributions in a vegetated multi-layered slope are derived considering the effects of roots on water permeability. PWP distributions are significantly affected by root-induced reductions in water permeability due to increases in the root volume ratio (Rv). Under drying conditions, negative PWP increases with Rv. The negative PWP induced by root water uptake increases with the desaturation coefficient (αi) or the ratio of the transpiration rate to saturated water permeability (Tp/ksi). As the overall water permeability underneath the vegetation layer decreases, the negative PWP induced by root water uptake increases.",

keywords = "Analytical solutions, Multi-layered, Pore-water pressure, Root water uptake, Vegetated slopes, Water permeability",

author = "Liu, {H. W.} and S. Feng and A. Garg and Ng, {C. W.W.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

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day = "1",

doi = "10.1016/j.compgeo.2018.06.003",

language = "English",

volume = "102",

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journal = "Computers and Geotechnics",

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T1 - Analytical solutions of pore-water pressure distributions in a vegetated multi-layered slope considering the effects of roots on water permeability

AU - Liu, H. W.

AU - Feng, S.

AU - Garg, A.

AU - Ng, C. W.W.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - New analytical solutions of pore-water pressure (PWP) distributions in a vegetated multi-layered slope are derived considering the effects of roots on water permeability. PWP distributions are significantly affected by root-induced reductions in water permeability due to increases in the root volume ratio (Rv). Under drying conditions, negative PWP increases with Rv. The negative PWP induced by root water uptake increases with the desaturation coefficient (αi) or the ratio of the transpiration rate to saturated water permeability (Tp/ksi). As the overall water permeability underneath the vegetation layer decreases, the negative PWP induced by root water uptake increases.

AB - New analytical solutions of pore-water pressure (PWP) distributions in a vegetated multi-layered slope are derived considering the effects of roots on water permeability. PWP distributions are significantly affected by root-induced reductions in water permeability due to increases in the root volume ratio (Rv). Under drying conditions, negative PWP increases with Rv. The negative PWP induced by root water uptake increases with the desaturation coefficient (αi) or the ratio of the transpiration rate to saturated water permeability (Tp/ksi). As the overall water permeability underneath the vegetation layer decreases, the negative PWP induced by root water uptake increases.

KW - Analytical solutions

KW - Multi-layered

KW - Pore-water pressure

KW - Root water uptake

KW - Vegetated slopes

KW - Water permeability

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DO - 10.1016/j.compgeo.2018.06.003

M3 - Article

AN - SCOPUS:85049304544

SN - 0266-352X

VL - 102

SP - 252

EP - 261

JO - Computers and Geotechnics

JF - Computers and Geotechnics

ER -

Analytical solutions of pore-water pressure distributions in a vegetated multi-layered slope considering the effects of roots on water permeability

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Keywords

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