岩土力学2012，Vol.33Issue(5)：1286-1292,7.
压缩过程中重塑黏土渗透系数的变化规律
A law of change in permeability coefficient during compression of remolded clays
摘要
Abstract
The difficulty in measuring the permeability of clays with enough accuracy enhances the importance of quantitatively predicting the permeability with simple physical parameters. This study collects 23 groups of data of permeability of remolded clays considering the effect of oedometer consolidation pressure. The investigated clays cover a wide range of liquid limits, varying from 40% to 300%. Based on the data of permeability, it is found that the logarithm of permeability coefficient changes with the void ratio in the exponential form, other than in the linear relationship, especially when the volumetric strain reaches the level of 20%. The controlling factors of the permeability coefficient of clays are analysed by multiple regression analysis. A simple method is also proposed for predicting the permeability coefficient, which can be applied to remolded clays with wide ranges of liquid limit and void ratio.关键词
重塑黏土/渗透系数/预测方法/孔隙比/液限Key words
remolded clays/ permeability coefficient/ predicting method/ void ratio/ liquid limit分类
建筑与水利引用本文复制引用
曾玲玲,洪振舜,陈福全..压缩过程中重塑黏土渗透系数的变化规律[J].岩土力学,2012,33(5):1286-1292,7.基金项目
国家自然科学基金资助项目(No.41102168,No.41172240). （No.41102168,No.41172240）
