Scaling laws for centrifuge modeling of capillary rise in sandy soils

被引：21

作者：

Rezzoug, A ^{[1
]}

König, D ^{[1
]}

Triantafyllidis, T ^{[1
]}

机构：

[1] Ruhr Univ Bochum, D-44780 Bochum, Germany

来源：

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING | 2004年 / 130卷 / 06期

关键词：

geotechnical engineering; environmental engineering; scale models; soil water; centrifuge; sand; soils;

D O I：

10.1061/(ASCE)1090-0241(2004)130:6(615)

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The application of geotechnical centrifuge modeling to environmental problems seems promising. In this paper, one aspect of similitude laws concerning the flow of water through soils is investigated. Within the Network of European Centrifuges for Environmental Geotechnic Research, several tests have been carried out to study similitude laws describing the capillary ascension in porous media at different levels of acceleration. The aim of this paper is to present the results obtained at Ruhr-Universiat Bochum. A fine sand is used in the experiment. For the visualization of capillary height in the soil sample, image processing is used. Different boundary conditions (constant or variable water level) have been investigated and discussed. All these experiments confirm that capillary rise appears scaled by the factor N and time seems to be scaled with N-2. Thus, these results support the possibility of extending the use of accelerated small-scale models to the capillary phenomenon in centrifuge and open the way to more complex investigations of flow and pollutant transport in unsaturated soils.

引用

页码：615 / 620

页数：6

共 7 条

[1] CENTRIFUGE MODELING OF TRANSPORT PROCESSES FOR POLLUTANTS IN SOILS [J].