【摘要】 普吉渣场黏土的水动力弥散特征是该地区地下水环境评价关键内容。以普吉地区非饱和红色黏土和黄色黏土为对象,以氯化钾为溶质,采用水平土柱入渗法对非饱和土壤水动力弥散系数Dsh(θ)进行了试验和分析。试验结果表明,对该2种土壤,非吸附性溶质Cl-1的水动力弥散系数Dsh(θ)与土壤含水率θ成幂函数关系;同一含水量条件下红色黏土中渣溶质运移的速率要大于黄色黏土。更多还原

【Abstract】 The hydrodynamic dispersion characteristic of soil is a key research project for the assessment of water environment in Puji.In this paper,KCl is used as solute,the hydrodynamic dispersion coefficient Dsh(θ) of the unsaturated soil(red clay soil and yellow clay soil)in Puji are measured by horizontal infiltration method.Experiment results show that the hydrodynamic dispersion coefficient has a relation of power function with water content θ and the hydrodynamic dispersion coefficient of red soil is greater than that of the yellow one if they are with the same percentage of water-containing.更多还原