压力入渗仪测定导水率的理论及其应用

The theory and application of the pressure infiltrometer in determining the hydraulic conductivity of soil

本文通过对单环入渗的数值模拟计算，分析了影响单环入渗渗流稳定流量修正系数Ｇ的各种因素，证明了Ｇ与单环的形状系数ＣＦ关系密切，其它因素影响很小．

In this paper, the factors that affect the correction coefficient G in steady infiltration from a single ring are analysed by means of numerical simulation. It is found that G is closely related to the form coefficient CF of the ring whereas the other factors have little effect so as to be ignored. The G-CF relation obtained is the key for determining the hydraulic conductivities by using the pressure infiltrometer.