Analysis of granular mechanical parameters characteristics in graded gravel triaxial test

Extensive quarrying for graded gravel can damage ecosystems and reduce biodiversity, making its optimized use crucial. Previous studies on the mechanical properties and deformation capacity of graded gravel filler have generally regarded it as a continuous medium, which yields certain deviations. In...

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Bibliographic Details
Published in:Environmental earth sciences 2024-05, Vol.83 (11), p.357, Article 357
Main Authors: Yue, Xiabing, Wu, Guanqing, Jiang, Shuangquan, Xie, Xuandi, Xie, Yongli, Meng, Junmiao
Format: Article
Language:English
Subjects:
Biodiversity
Biogeosciences
Compression
Deformation
Discrete element method
Earth and Environmental Science
Earth Sciences
Environmental Science and Engineering
Geochemistry
Geology
Gravel
Hydrology/Water Resources
Mathematical models
Mechanical properties
Numerical models
Original Article
Parameters
Quarrying
Terrestrial Pollution
Triaxial compression tests
Triaxial tests
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Summary:Extensive quarrying for graded gravel can damage ecosystems and reduce biodiversity, making its optimized use crucial. Previous studies on the mechanical properties and deformation capacity of graded gravel filler have generally regarded it as a continuous medium, which yields certain deviations. In this study, the discrete element method is applied to consider the discontinuity of the material. A particle flow model is established based on relevant test parameters for graded gravel and a triaxial compression test is carried out accordingly. The effects of particle meso-parameters on the mechanical properties of graded gravel are investigated after using indoor test results to calibrate the model. The triaxial compression numerical model of graded gravel is utilized to differentiate two particles contact models in the discrete element software PFC; the characteristics and applicable objects of the two models are determined. The results confirm that the linear contact key model is suitable for graded gravel. This work provides valuable insights for further exploration of the load-bearing characteristics of graded gravel pavement bases and positively impacts the ecological environment.
ISSN:1866-6280
1866-6299
DOI:10.1007/s12665-024-11637-8