Experimental study on permeability characteristics of sandy gravel with high fines content

WU Ping; LING Xiaodong; SHI Beixiao; HE Ning

doi:10.11779/CJGE2023S10028

Volume 45 Issue S1

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Chinese Journal of Geotechnical Engineering > 2023 > 45(S1): 44-49. > DOI: 10.11779/CJGE2023S10028

WU Ping, LING Xiaodong, SHI Beixiao, HE Ning. Experimental study on permeability characteristics of sandy gravel with high fines content[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 44-49. DOI: 10.11779/CJGE2023S10028

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Experimental study on permeability characteristics of sandy gravel with high fines content

1.
China Railway Water Resources and Hydropower Planning and Design Group, Nanchang 330029, China
2.
College of Overseas Education, Nanjing Tech University, Nanjing 211816, China
3.
Department of Geotechnical Engineering, Nanjing Hydraulic Research Institute, Nanjing 210024, China
4.
MWR Key Laboratory of Reservoir Dam Safety Nanjing 210029, China
5.
Gansu Electric Power Investment Bingling Hydropower Development Co., Ltd., Linxia 731600, China

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Received Date: July 04, 2023
Available Online: November 23, 2023

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Abstract

Abstract

A series of tests are conducted on the permeability characteristics of sandy gravel with high fines content. It is found that the permeability coefficient of sandy gravel decreases with the increase of the particles less than 5 mm and the relative density. The change of permeability coefficient with the relative density can be described by the semi-logarithmic formula, and the change of permeability coefficient with the content of particles less than 5 mm can be described by the power function. By using the normalization method, the empirical formula is proposed to predict the permeability coefficient of sandy gravel for overburden in Poyang Lake area. The seepage deformation of sandy gravel with high content of particles less than 5 mm is characterized by the soil flow failure or transitional failure. With the increase of the content of particles less than 5 mm and the relative density, the transitional failure turns to the soil flow one.
- sandy gravel,
- permeability characteristic,
- high fines content,
- relative density

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References (14)

References

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