摘要
根据不同温度条件下的入渗资料 ,分析了活塞 (Green Ampt)公式在温度场中的适用性 ,认为 ,Green Ampt公式适用于温度场影响下的土壤水分运动。温度影响下的土壤水分运动的通量主要依赖于概化区的饱和导水率、湿润锋处基质势以及温度 ,其中饱和导水率的温度效应较大 ,而基质势的温度效应较小 。
The applicability of the Green-Ampt formula for infiltration affected by temperature is analyzed according to the infiltration data obtained from soil-silt roam and sandy soil in the loess region at 5 to 40C.It is found that this formula is suitable for the calculation of water transportation under the influence of temperature.The flux density of filtration depends on saturated hydraulic conductivity and temperature,but it is independent of the metric potential of wetting front and the variation of soil mositure.The effect of temperature on metric potential can be neglected in light soil.
出处
《水利学报》
EI
CSCD
北大核心
2002年第10期46-50,共5页
Journal of Hydraulic Engineering
基金
陕西省教委专项重点项目资助
国家自然科学基金资助 ( 4 0 2 710 2 2 )
