Role of roots in the shear strength of root-reinforced soils with high moisture content

Fan, Chia-Cheng; Su, Chih-Feng

doi:10.1016/j.ecoleng.2008.02.013

Cited by 237 publications

(130 citation statements)

References 12 publications

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“…Greenwood (2007) developed a straightforward computer program, i.e., SLIP4EX, which is the combined hydrological effect and mechanical reinforcement of plant roots on slope stability. In addition, some literature has suggested solving the root cohesion overestimation problem use empirically determined correction factors (e.g., Fan and Su 2008;Hubble et al 2010). Recently, Mao et al (2014) used two numerical modeling approaches, namely, discrete element method (DEM) and standard implicit finite element method (FEM), to evaluate root reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Estimation of soil reinforcement by the roots of four post-dam prevailing grass species in the riparian zone of Three Gorges Reservoir, China

Zhong

Bao

et al. 2016

J. Mt. Sci.

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Section: Introductionmentioning

confidence: 99%

Estimation of soil reinforcement by the roots of four post-dam prevailing grass species in the riparian zone of Three Gorges Reservoir, China

Zhong

Bao

et al. 2016

J. Mt. Sci.

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“…O esquema de um sistema para cisalhamento direto in situ, desenvolvido por Endo (1980), é apresentado na Figura 11. Esse sistema foi desenvolvido para incluir plantas inteiras em testes de cisalhamento e por isso utiliza corpos de prova de grandes dimensões (normalmente maiores que 20x20x20 cm) (FAN; SU, 2008;ABDULLAH;GIADROSSICH, 2009;GHESTEM et al, 2014). A Tabela 1 apresenta uma coletânea de dimensões de caixas utilizadas em testes de cisalhamento direto in situ.…”

Section: Figura 9 Arranquio De Plantas Inteiras Relação Típica Entrunclassified

Métodos De Avaliação Da Influência E Contribuição Das Plantas Sobre a Estabilidade De Taludes

Maffra

Moraes

Sousa

et al. 2017

RSA

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Resumo:O reforço e estabilização de solos por plantas são facilmente observados na natureza. Entretanto, o uso de plantas (e suas raízes) em obras de Engenharia Natural requer conhecimentos e medições de seus efeitos na estabilidade do solo. O objetivo desta revisão foi abordar e discutir conceitualmente os métodos utilizados para avaliação da influência das raízes sobre a melhoria da resistência mecânica do solo e sua inclusão na análise de estabilidade de taludes. A estabilização de taludes, seja pela redução da erodibilidade ou ancoramento do solo em profundidade, está diretamente associada à arquitetura e à densidade de comprimento radicular das espécies e do tipo de planta utilizada (gramínea, arbusto ou árvore). As informações compiladas mostram-se úteis aos trabalhos que envolvem o uso de plantas em dimensionamentos geotécnicos, seja para a contenção de processos erosivos ou para a estabilização superficial de massas de solo. O reforço mecânico do solo devido à presença de raízes tem papel de grande importância na estabilidade de taludes, no entanto, técnicas de avaliação da interação solo-raízes ainda devem ser aprimoradas para condições de campo.Palavras-Chave -Engenharia Natural, interação solo-raízes, reforço do solo, sistema radicular, fator de segurança.Abstract: Soil reinforcement and stabilization by plants are easily observed in nature. However, the use of plants (and its roots) in Soil Bioengineering works requires knowledge and measurements of its effects on soil stability. The aim of this study was to approach and conceptual discuss the methods used to evaluate the influence of roots on soil mechanical resistance improvement and its inclusion in slope stability analysis. The slope stabilization, either by decreasing soil erodibility or increasing soil anchorage, is directly associated with root length density and root architecture, both of which depend on the species and type of plant used (grass, shrub or tree). This information can be useful in geotechnical designs, especially in erosion control and shallow mass stabilization. Soil reinforcement by roots plays an important role in slope stability; however, the techniques of soil-root interaction assessment should be improved to field conditions.

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“…The soil-root system's theory is that the soil-root system with a spatial distribution and structure can increase the shear strength of soil through associative root networks which reinforce soil layers by towing obliquely and anchoring vertically (Schmidt et al 2001;Stokes et al 2008;Fan and Su 2008). Plant roots can also affect physical and chemical properties of soil related to soil erosion which further promote soil stability (Gyssels et al 2005).…”

Section: Root Enhancementmentioning

confidence: 99%

Effect of Cynodon dactylon community on the conservation and reinforcement of riparian shallow soil in the Three Gorges Reservoir area

Chen

Zhang

et al. 2015

Ecol Process

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Introduction: Riparian vegetation plays a crucial role in soil conservation and riverbank reinforcement. The Three Gorges hydrologic project has significantly changed the pattern of water-level fluctuation and riparian environment, which significantly influenced plant community development and its effect on soil conservation and riverbank protection. Cynodon dactylon, a perennial grass with developed root system and creeping stems, has become a dominant riparian species in the Three Gorges area after the completion of the dam. We aimed to characterize how the soil-root system under the C. dactylon community responded to environmental changes and effects of the soil-root system on shallow soil conservation and riverbank reinforcement through field investigation and laboratory test. Methods: We conducted a field survey and experimental research. Quadrates of a natural C. dactylon community were set up on a riverbank along an altitude gradient. Plants were sampled randomly for the measurements of spatial structure and tensile strength of roots. Soil erosion resistance, soil scour resistance, and shear strength of sampled soil-root systems and control soil were tested in the laboratory.

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Role of roots in the shear strength of root-reinforced soils with high moisture content

Cited by 237 publications

References 12 publications

Estimation of soil reinforcement by the roots of four post-dam prevailing grass species in the riparian zone of Three Gorges Reservoir, China

Estimation of soil reinforcement by the roots of four post-dam prevailing grass species in the riparian zone of Three Gorges Reservoir, China

Métodos De Avaliação Da Influência E Contribuição Das Plantas Sobre a Estabilidade De Taludes

Effect of Cynodon dactylon community on the conservation and reinforcement of riparian shallow soil in the Three Gorges Reservoir area

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