Permeability similarity of soils in centrifugal model tests

WANG Nian-xiang; REN Guo-feng; GU Xing-wen

doi:10.11779/CJGE2022S2015

Volume 44 Issue S2

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 66-70. > DOI: 10.11779/CJGE2022S2015

WANG Nian-xiang, REN Guo-feng, GU Xing-wen. Permeability similarity of soils in centrifugal model tests[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 66-70. DOI: 10.11779/CJGE2022S2015

Citation:

PDF (1054 KB)

Permeability similarity of soils in centrifugal model tests

WANG Nian-xiang^{1, 2,},
REN Guo-feng^{1, 2, ,},
GU Xing-wen^{1, 2}

1.
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China
2.
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210029, China

More Information

Received Date: November 30, 2022
Available Online: March 26, 2023

Graphical Abstract

Abstract

Abstract

Whether the time scale t_p/t_m=n² for consolidation and pore water pressure diffusion in centrifugal model tests is correct or not is infact. How the permeability coefficient of soils changes with the centrifugal acceleration. The permeability similarity theory of centrifuge model is derived. The permeability tests of centrifuge model are carried out to study the variation laws of permeability coefficient of soils with the acceleration. The test results show that the permeability coefficient linearly increases with the increase of the acceleration. The permeability in the centrifugal model tests conforms to the Darcy's law. The ratio of the model permeability coefficient to the prototype one k_m/k_p linearly increases in proportion to the acceleration, and the scale factor ≅ 1. It is verified that the permeability coefficient scale in the centrifugal model tests is η_k=1/n. The research results are of great theoretical and application values for the centrifugal model tests.
- permeability similarity,
- Darcy's law,
- scale factor,
- permeability coefficient scale,
- centrifugal model test

FullText(HTML)

References (12)

References

[1]	王年香, 章为民. 土工离心模型试验技术与应用[M]. 北京: 中国建筑工业出版社, 2015. WANG Nian-xiang, ZHANG Wei-min. Centrifugal Model Test Technology and Its Application[M]. Beijing: China Architecture & Building Press, 2015. (in Chinese)
[2]	SCHOFIELD A N. Cambridge geotechnical centrifuge operations[J]. Géotechnique, 1980, 30(3): 227–268. doi: 10.1680/geot.1980.30.3.227
[3]	CARGILL K W, KO H Y. Centrifugal modeling of transient water flow[J]. Journal of Geotechnical Engineering, 1983, 109(4): 536–555. doi: 10.1061/(ASCE)0733-9410(1983)109:4(536)
[4]	GOODINGS D J. Relationships for modeling water effects in geotechnical centrifuge models[C]// Applications of Centrifuge Modeling to Geotechnical Design. Balkema, Rotterdam, 1985.
[5]	CROCE P, PANE V, ZNIDARCIC D, et al. Evaluation of consolidation theories by centrifuge modeling[C]// Applications of Centrifuge Modeling to Design. Balkema, Rotterdam, 1985.
[6]	SINGH D N, GUPTA A K. Modelling hydraulic conductivity in a small centrifuge[J]. Canadian Geotechnical Journal, 2000, 37(5): 1150–1155. doi: 10.1139/t00-027
[7]	KHALIFA A, GAMIER J, THOMAS P, et al. Scaling laws of water flow in centrifuge models[C]// International Symposium on Physical Modelling and Testing in Environmental Geotechnics. Paris, 2000.
[8]	SHARMA J S, SAMARASEKERA L. Effect of centrifuge radius on hydraulic conductivity measured in a falling-head test[J]. Canadian Geotechnical Journal, 2007, 44(1): 96–102. doi: 10.1139/t06-092
[9]	隋海宾, 王秋生. 离心模型试验中土的渗透相似特性[J]. 交通标准化, 2009, 37(17): 174–177. https://www.cnki.com.cn/Article/CJFDTOTAL-JTBH200917051.htm SUI Hai-bin, WANG Qiu-sheng. Hydraulic conductivity in centrifuge modeling test[J]. Transport Standardization, 2009, 37(17): 174–177. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JTBH200917051.htm
[10]	ANDERSON C, SIVAKUMAR V, BLACK J A. Measurement of permeability using a bench-top centrifuge[J]. Géotechnique, 2015, 65(1): 12–22. doi: 10.1680/geot.13.P.112
[11]	MUSKAT M. The Flow of Homogeneous Fluids Through Porous Media[M]. New York: McGraw-Hill, 1937.
[12]	LAMBE T W, WHITMAN R V. Soil Mechanics, SI Version[M]. New York: Wiley, 1979.

Supplements (0)

Cited By

Cited by

Periodical cited type(1)

李飞霞，方彪，刘庆，杨洋，邓亚虹. Q_3重塑黄土三维非线性流变本构模型试验研究. 地下空间与工程学报. 2024(S2): 638-645 .

Other cited types(3)

Get Citation

PDF

XML

Article views PDF downloads Cited by(4)

Permeability similarity of soils in centrifugal model tests

Abstract

References

Cited by

Periodical cited type(1)

Other cited types(3)

Catalog

Related

Permeability similarity of soils in centrifugal model tests

Abstract

References

Cited by

Periodical cited type(1)

Other cited types(3)

Catalog

Related

Export File

Citation

Format

Content