Clogging test on filter fabric of plastic drainage board used in clay

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Zheng, Ai-Rong^1^2^3^4 ; Wang, Chuang^1^2^3^4

CCCC Tianjin Port Engineering Institute Ltd., Tianjin

300222, China^1

Key Laboratory of Geotechnical Engineering, Ministry of Communications, PRC, Tianjin

300222, China^2

Key Laboratory of Geotechnical Engineering, Tianjin

300222, China^3

CCCC First Harbor Engineering Company Ltd., Tianjin

300461, China^4

关键词: Gradient ratio;    New experimental method;    Per unit;    Plastic drainage;    Soft clays;    Soil content;    Vacuum preloading;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/4/042043/pdf
DOI  :  10.1088/1755-1315/295/4/042043

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Vacuum preloading technology combined with plastic drainage board has been applied more and more widely. Because the plastic drainage board is used soft-clay in most cases, it is not recommend to study the clogging of filter fabric by gradient ratio method. Therefore, we have proposed a new experimental method, i.e. axial compression clogging. This method can be used to study the clogging of geotextile in clay. Several groups of filters fabric were carried out by this method, and their performances were compared with those obtained from on-side used plastic drainage board. The results show that soil content per unit area and vertical permeability coefficient are very close to those obtained from on-side used plastic drainage board, and the values of the former are slightly smaller than those of the latter.