不同浓度盐溶液及盐渍土对毛细水上升影响的研究

Effect of Different Concentration Salt Solution and Saline Soil on Capillary Water Upward Movement

通过观测毛细水上升速度和高度,研究不同浓度盐溶液和盐渍土对毛细水上升的影响,并对这些影响因素进行机理分析。研究结果表明:同一颗粒级配下不同浓度盐溶液毛细水上升在初始阶段受盐浓度的影响较大,最终上升高度随浓度的增加而下降;盐渍土毛细水上升高度低于无盐土样,开始阶段盐渍土毛细水上升速度低于无盐土样,随着时间的推移上升速度趋于一致。

Through the observation of rising velocity and height of capillary water,the effect of different concentration salt solution and saline soil on capillary water rise is studied and the mechanism of these factors is analyzed.The results show that the effect of salt concentration on rise of capillary water is larger under the same grain size distribution,the eventual rising height decreases with the increase of salt concentration;the rising height of capillary water in saline soil is larger than that in no-salt soil,the rising velocity in saline soil is lower than that in no-salt soil,while tends to be the same with the passage of time.