摘要
软土随着固结压力的增加其渗透性在减小,反映了土样渗透性的非线性特征。且当有效应力达到一定值时,渗透性减小趋于平缓。在曲线图中,大部分土样的渗透性呈现线性递减的关系,部分土样的渗透系数呈现双曲线型和S型递减的关系,不同的趋势关系不仅与原状土样的所处位置有关,也与土样所处的深度有关。
The permeability of soft soil decreases with it’s consolidation pressure increases,it reflects the character-istics of nonlinearity of soil permeability . When the effective stress reaches acertain value,the permeability decreases slowly. In the diagram,the most of the permeability of the soil sample renders decreasing at a linear relationship,some soil permeability coefficient of the hyperbolic diminishing and s-type relations,the different trends are not only associated with undisturbed soil sample location,also relevant to the depth of the soil samples.
出处
《城市勘测》
2015年第2期173-176,共4页
Urban Geotechnical Investigation & Surveying
基金
广州城市地质环境监测预警新技术示范研究(GMTC141BZFG0068)
关键词
渗透系数
软土
固结
spermeability coefficient
soft soil
consolidation
