Abstract
As the relations between roots and soil are quite complex,this paper,considering the root-soil composite as an organism,brings forward the root form-based soil reinforcement numerical analysis method to study the effects of different roots on the stress field and displacement field of the soil under the conditions of rainfall and runoff erosions.The author selects a common slope plant,nerium indicum,as research object,and sets up the numerical models on the basis of natural root features to suggest the effects of roots with different included angles between taproot and lateral roots on the stability of slope surface soil.The results show that finite element method is capable in stimulating the root-soil interaction and intuitively reflecting the root effects on the stress field and displacement field of slope surface.Roots function as a rigid net structure in soil which transmits the slope stress to the deeper soil so as to enhance the resistance of the whole root distribution,improve the surface stability and decrease the displacement of surface soil.The displacement of slope surface soil reduces as the root length increases.Different included angles between taproot and lateral roots have different effects on the surface soil displacement,with the angle of 45°-60° most effective in reducing the displacement.The reinforcement of the rooted slope soil is restricted to the shallow layers and the roots serve to improve the cohesion,decrease lateral displacement of shallow soil and strength the stability of soil surface.
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Claims 5
Claim · model-written summary
Finite element modeling represented root–soil interaction and root effects on slope stress and displacement.
- Taxon
- nerium indicum
Nerium oleandert0 - Outcome
- root-soil interactione0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nerium indicum”
e0“finite element method is capable in stimulating the root-soil interaction and intuitively reflecting the root effects on the stress field and displacement field of slope surface”
Claim · model-written summary
Roots transmitted slope stress deeper and improved surface stability while decreasing surface soil displacement.
- Taxon
- nerium indicumNerium oleandert0
- Organ / stage
- Rootse0
- Outcome
- surface stabilitye0
- Qualifier
- transmits the slope stress to the deeper soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nerium indicum”
e0“Roots function as a rigid net structure in soil which transmits the slope stress to the deeper soil so as to enhance the resistance of the whole root distribution,improve the surface stability and decrease the displacement of surface soil”
Claim · model-written summary
Surface soil displacement decreased as root length increased.
- Taxon
- nerium indicumNerium oleandert0
- Organ / stage
- roote0
- Outcome
- displacement of slope surface soile0
- Direction
- reducese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nerium indicum”
e0“The displacement of slope surface soil reduces as the root length increases”
Claim · model-written summary
Root angles of 45°-60° were most effective in reducing surface soil displacement.
- Taxon
- nerium indicumNerium oleandert0
- Organ / stage
- taproot and lateral rootse0
- Outcome
- surface soil displacemente0
- Direction
- reducinge0
- Value
- 45°-60°e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nerium indicum”
e0“Different included angles between taproot and lateral roots have different effects on the surface soil displacement,with the angle of 45°-60° most effective in reducing the displacement”
Claim · model-written summary
Root reinforcement was restricted to shallow layers and improved cohesion and surface stability while decreasing lateral displacement.
- Taxon
- nerium indicumNerium oleandert0
- Organ / stage
- rootse0
- Outcome
- cohesion,decrease lateral displacement of shallow soil and strength the stability of soil surfacee0
- Qualifier
- restricted to the shallow layerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“nerium indicum”
e0“The reinforcement of the rooted slope soil is restricted to the shallow layers and the roots serve to improve the cohesion,decrease lateral displacement of shallow soil and strength the stability of soil surface”