通过饱和-非饱和分层土柱迁移试验及其数值模拟来研究铜离子运移深度随时间的变化规律及其影响因素，结果表明：试验初期，包气带中产生的水势负压会使土壤水分重新分配，非饱和土的含水率小幅度增加，饱和土上层的含水率明显降低，但很快又达到饱和。水势负压对铜离子的迁移影响不大。铜离子的迁移速率随着土壤埋深的增大而减小，吸附-沉淀作用是主要影响因素。铜离子在60 d、110 d、160 d、1 a、3 a、5 a六个时刻的迁移深度分别为20．0、35．0、45．0、52．5、66．7、70．0 cm，这可以作为治理重金属铜对土壤和地下水造成的污染的依据。%It adopted the saturated-unsaturated layered soil column experiment and its numerical simulation to study the variation of copper migra-tion depth with time and the influence factors. The results show that early in the experiment,negative pressure in the vadose zone can lead to soil water redistribution:the moisture content of unsaturated soil increases in a small degree and that of upper unsaturated soil reduces obviously,but recovers soon. Water negative pressure has a little influence to the copper migration. Migration rate of copper will decrease with the increase of soil depth. Adsorption-precipitation effect is the main factor. That copper reaches the depth of 20 cm,35 cm,45 cm,52. 5 cm,66. 7 cm and 70 cm at the time of 60 d,110 d,160 d,1 y,3 y and 5 y,which can be used for dealing with copper polluting of soil and underground water.
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