[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]
Copy
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
- Author(s):
-
Yuan Yanan1, Li Shiwen1, Hu Jinghua1, Xiao Wei2, Wang Bo3, Zheng Xinru1, Liu Jing1
-
(1.College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Huhhot 010019, China; 2.Zhongkan Metallurgical Geotechnical Investigation Design and Research Institute Co., Ltd., Urumqi 830000, China; 3.College of Geography Science, Inner Mongolia Normal University, Hohhot 010010, China)
-
- Keywords:
-
root; root-soil composite; pulling force test; friction resistance characteristics
- 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.