Impacts of Soil Initial Water Content and Bulk Density on Infiltration Law of Red Soil
Effects of different soil initial water contents(7％,11％ and 15％) and bulk densities(1.2,1.3,1.4,1.5 g/cm3) on the laws of infiltration in red soil were explored through indoor soil column simulation experiments.Base on Kostiakov model and Philip model,the fitting analysis of infiltration process was conducted and infiltration model parameters were obtained.The results showed that:in the homogeneous red soil,the water infiltration,infiltration rate,and wetting front movement rate were of exponential decrease with time,and Philip infiltration model was more suitable.In the progress of time,the soil water content gradually reached saturation point,and the changes of soil infiltration rate and wetting front movement rate become smaller and smaller.The infiltration rate and initial water content were inversely correlated.The initial water content increased with the decrease of infiltration rate.The wetting front movement rate increased with the increase of initial moisture content.The infiltration rate and wetting front movement rate decreased with the increase of the soil bulk density.
red soilwater infiltrationinitial water contentsoil bulk density
国家科技期刊平台
NSTL
万方数据
维普
