[1]Yuan Yanan,Li Shiwen,Hu Jinghua,et al.Characterization of the Interfacial Friction Resistance Between Amorpha fruticose Root and Soil Under Pulling Forces[J].Research of Soil and Water Conservation,2024,31(01):207-213.[doi:10.13869/j.cnki.rswc.2024.01.026]
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Characterization of the Interfacial Friction Resistance Between Amorpha fruticose Root and Soil Under Pulling Forces
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 01
Page number:
207-213
Column:
Public date:
2024-02-20
- Title:
- Characterization of the Interfacial Friction Resistance Between Amorpha fruticose Root and Soil Under Pulling Forces
- CLC:
- S157
- DOI:
- 10.13869/j.cnki.rswc.2024.01.026
- Abstract:
- [Objective] This study aims to investigate the variation of pullout friction characteristics of root-soil interface of Amorpha fruticosa under different influencing factors, and to provide a theoretical basis for the selection of cultivated plant species in the study area. [Methods] The influence of fibrous roots, root diameter, and pulling rate on the maximum pulling force and friction resistance of A. fruticosa root-soil composite, as well as the friction coefficient in the A. fruticosa root-soil interface were investigated through indoor tensile testing. [Results] The curve between pulling force and time, pulling force and displacement of root-soil composite with or without firbrous root were basically the same. However, the maximum pulling force, root-soil friction coefficient, and friction resistance of the fibrous root-soil composite were 1.3 times higher than tap root-soil composite in the same root diameter. In tap root-soil composite, the root diameter was exponentially correlated with the maximum pulling force, pulling friction coefficient, and root-soil friction coefficient. With the increase of pulling rate, root-soil friction coefficient, and pulling friction coefficient showed an increasing trend in which values under the pulling rate of 500 mm/min(14.06 N, 0.74, 40.11 kPa)was larger than 10 mm/min(12.04 N, 0.65, 35.58 kPa). The redundancy analysis showed that root diameter, presence or absence of fibrous roots, and pulling rate were significantly correlated with the interfacial root-soil friction. Contribution rates from root diameter, fibrous roots, and pulling rate were 55.4%, 23.7%, and 20.9%, respectively. [Conclusion] A. fruticosa showed strong soil conservation capacity and will play its role when subjected to the pulling force loads from high wind and runoff.
- References:
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Last Update:
2024-02-20