软黏土渗透系数的归一化性状研究  

Research on the Normalized Behavior of Soft Clays' Hydraulic Conductivity

作　　者：蔡超[1,2] 张立志 陶崇福[4] 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,南京210098 [2]河海大学岩土工程研究所,南京210098 [3]山东临沂岸堤水库管理处,临沂276000 [4]安徽省地震局,合肥230031

出　　处：《科学技术与工程》2013年第4期1073-1076,共4页Science Technology and Engineering

摘　　要：通过收集、整理不同软黏土的变水头固结渗透试验数据,分析其在压缩过程中渗透系数的变化规律。研究结果表明,尽管液限含水率不同,导致不同软黏土的e-lg k曲线相差较大;但是通过引入归一化参数e/e_L,可以有效地将液限含水率介于43%—106%之间的软黏土e-k关系曲线归一化至两条相交直线。基于软黏土的这一归一化特性,提出了压缩过程中软黏土渗透系数的预测表达式。Through collecting and collating experimental data of falling head hydraulic conductivity tests on dif- ferent soft clays during compression, analysis on the change law of hydraulic conductivity of soft clays during com- pression is conducted. It is found that even though the e-lg k curves are different from each other due to the differ- ence of liquid limit, the e-k curves of soft clay with liquid limit ranging from 43% to 106% can be normalized into two intersecting lines by introducing the normalized parameter e/eL. Based on this point, a method of predicting hy- draulic conductivity during compression is prooosed.

关 键 词：软黏土 压缩过程 孔隙比 渗透系数 归一化 

分 类 号：TU411.4[建筑科学—岩土工程]