Particle migration and clogging in porous media with seepage

被引：0

作者：

Zhou Y.-C. ^{[1
]}

Xu H.-L. ^{[1
]}

Chen J.-D. ^{[1
]}

Zhang Y.-P. ^{[1
]}

Tang Y. ^{[2
,3
]}

Peng Y. ^{[3
]}

机构：

[1] The Institute of Municipal Engineering, Zhejiang University, Hangzhou

[2] MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou

[3] College of Civil Engineering and Architecture, Zhejiang University, Hangzhou

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷 / 02期

关键词：

Clogging; Migration; Particle; Porous medium; Seepage;

D O I：

10.11779/CJGE202202006

中图分类号：

学科分类号：

摘要：

The migration and clogging of fine particles in porous media with seepage are of great significance for preventing the internal erosion of soils and improving the performance of artificial filtration facilities. The migration and clogging in the gravel substrate under the seepage are studied based on the X-CT technology. The results indicate that the migration of particles in porous media generally increases with the increase of seepage velocity, and its influence is significantly different under different particle size ratios. The X-CT results indicate that the particles present a stable vertical distribution in the column and clogging formed under the smaller dss/dfs. However, the vertical accumulative interception curve of particles presents a linear distribution and changes continuously, indicating that the particles penetrate continuously under the higher dss/dfs. On this basis, the threshold whether particles penetrating or clogging is determined. Moreover, the factor of (dss/dfs)2.1Re*1.8(tu*/H)0.2 is the best dimensionless parameter for calculating the penetration rate of particles, and the relevant formula is developed. © 2022, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.

引用

页码：255 / 263

页数：8

共 21 条

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