A 3D Model Applied to Analyze the Mechanical Characteristic of Living Stump Slope with Different Tap Root Lengths
Source abstract
Abstract
Although the current ecological engineering technology can reinforce shallow landslides, it cannot reinforce deep landslides. A new type of ecological engineering technology-living tree stump slope protection was developed, aiming at the deficiency of current ecological engineering technology. For living stumps with different tap root lengths, the mechanical properties of the living stump slope and root system were analyzed. The model was based on the finite element method, using the Mohr-Coulomb failure criterion to consider the mechanical plasticity of the soil. The three-dimensional (3D) models of living stumps with different tap root lengths were simulated by embedded beam elements. Changes in stress and strain of soil and root system were simulated. The strength reduction method was used here to calculate the safety factor of the slope. The results showed that long taproots moved the soil shear stress area to deeper soil layers, increasing the stability of the slope. The root system in the middle and lower part of the slope mainly exerted its tensile strength and played a positive role in the stability of the slope. The longer the taproots, the more stable the slope. Slope stability may be affected by root length, spatial root morphology, and the spatial layout of the root system on the slope. Planting living stumps in the middle and lower part of the slope densely was recommended in ecological engineering.
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Research context
OpenAlex topics: Tree Root and Stability Studies · Plant responses to water stress · Soil Mechanics and Vehicle Dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil and Engineering Management, Guangzhou Maritime University, Guangzhou 501725, China
School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China
Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha 410114, China
School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China
Funding
National Natural Science Foundation of China · science and technology innovation Program of Hunan Province · Forest Science and Technology Innovation Program of Hunan Province · Special Fund of Safety Production Prevention and Emergency Response of Hunan Province in 2021 · Hunan Provincial Natural Science Foundation of China · Key Project of Chongqing Natural Science Foundation · Changsha University of Science & Technology
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