三轴试样钻孔灌砂固结排水效果试验研究
ROCK AND SOIL MECHANICS（2009）
Abstract
对渗透性较差的重黏土样进行固结排水试验时,其饱和、固结、剪切过程时间较长.为提高固结排水试验效率,改进了三轴排水工艺,提出在试样中钻孔灌砂形成竖向排水通道,并进行了针对黏土样的固结排水试验的验证.试验结果表明,1%～3%置换率的砂井对固结排水试验应力-应变无影响,并有利于加速三轴试样的饱和、固结排水、孔压消散、剪切排水过程,可使试验效率提高5倍以上;试样周边、顶面、底面粘贴滤纸条,再结合试样内部钻孔灌砂,是改善三轴试验排水路径的一种科学合理的、高效的方法,能够获得准确、可靠的E-B模型参数.
MoreTranslated text
Key words
drilling and sand replacement method, replacement ratio, consolidated drainage, consolidated drained triaxial tests, E-B model
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined