Permeability similarity of soils in centrifugal model tests

被引：0
|
作者：
Wang N.-X. [1 ,2 ]
Ren G.-F. [1 ,2 ]
Gu X.-W. [1 ,2 ]
机构：
[1] Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing
[2] State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷
关键词：
centrifugal model test; Darcy's law; permeability coefficient scale; permeability similarity; scale factor;
D O I：
10.11779/CJGE2022S2015
中图分类号：
学科分类号：
摘要：
Whether the time scale tp/tm=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 km/kp 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 ηk=1/n. The research results are of great theoretical and application values for the centrifugal model tests. © 2022 Chinese Society of Civil Engineering. All rights reserved.
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页码：66 / 70
页数：4
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