摘要
为评价膨润土裂缝的自愈合效果,通过渗透-饱和试验,研究了不同裂缝形态、数量的压实膨润土试样渗透系数的变化规律,采用统计学方法分析了各组试样渗透系数的差异性。研究显示:在饱和过程中,干密度为1.2 g/cm^3的含裂缝压实膨润土的渗透系数随时间呈逐渐递减趋势,且含裂缝试样渗透系数与完整试样渗透系数之间无显著性差异。表明裂缝形态和数量对压实膨润土的渗透性无显著影响,压实膨润土具有良好的自愈性能。
In order to evaluate the self-healing effect of bentonite fracture,researches were carried on to find the changing rules of permeability coefficient for the compacted bentonite samples,which have different fracture configurations and numbers,by permeated-saturated experiments.The statistical methods were used to analyze the differences of different permeability coefficient samples.The results show that permeability coefficient of compacted bentonite with fractures （dry density 1.2 g/cm3） gradually decreased with time during the saturated process,and the permeability coefficients have no significant differences between the samples with or without fractures.It also shows that configurations and numbers of fracture have no significant influence on the permeability of compacted bentonite.The compacted bentonite has good self-healing performance.
出处
《岩土工程技术》
2014年第1期41-44,共4页
Geotechnical Engineering Technique
关键词
压实膨润土
裂缝
渗透系数
自愈合
compacted bentonite
fracture
permeability coefficient
self-healing
