土壤入渗气液两相流的变化过程

Changes of two soil phases in the process of infiltration

根据室内及田间恒定土壤空气压力、正常积水入渗过程中湿润层土壤含水量的变化,观察了禁锢土壤空气压力及入渗水流的变化过程。结果表明,入渗过程中禁锢土壤空气压力变化过程可分为急剧变化、缓慢变化和稳定变化3个阶段,得出稳定入渗阶段的平均截面含水率分别为0.97和0.50L/L。

According to the variation of the water volume in the wet layer which exists in the stable soil air pressure infiltration and the normal infiltration indoors and outdoors,we have observed the process of the soil air entrapment pressure and the infiltration water flow.Studies have showed that the soil air pressure content of the wetted soil can be divided into three stages:rapid,slow and stable stages.And we have concluded that the section water content in the stable infiltration is 0.97 or 0.50 L/L.