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中文摘要：
在室内恒温条件下，分别对均质土柱和非均质土柱采用饱和一稳流一维垂直土柱易混置换法，就2种土柱对Ca^2＋，Cl^-在土壤中运移的规律进行了初步研究。研究结果表明：Ca^2＋，Cl^-在非均质土柱中的水动力弥散系数大于在均质土柱中的水动力弥散系数，而阻滞因子则小于均质土柱。对于非均质土柱，其孔隙水平均流速也比较大，代换液浓度对穿透曲线（BTC）的影响不太显著；而均质土柱中代换液浓度对BTC影响较为显著，这可能是由于非均质土壤的孔隙度和土壤结构具有较为显著的空间非均一性所致。
英文摘要：
In present paper, the movement rule of Ca^2＋ and Cl^- on the disturbed soil column and undisturbed soil column under the constant room temperature condition, by means of saturated and steady flow one dimensional normal soil column easy mixed displacement technique, were investigated respectively. The results show that the hydrodynamic dispersion coefficient of Ca^2＋ and Cl^- in the undisturbed soil is bigger than that in the disturbed soil, while the delay factor is smaller than that in the disturbed soil. Compare with the disturbed soil column this is obvious that the average pore water flow rate increase quickly, the concentration of substitution solution is not have any noticeable effect on the breakthrough curve （BTC）, but the concentration of substitution solution in undisturbed soil column have a notable impact of the BTC, which is ascribed to the obvious spatial in non-homogeneity of porosity and soil structure on undisturbed soil column.
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