水利学报2017，Vol.48Issue(10)：1220-1228,1239,10.DOI:10.13243/j.cnki.slxb.20170054
膨胀性土壤降雨入渗产流模型
Unsteady rainfall infiltration model for swelling soil
摘要
Abstract
The soil swelling and deformation will happen when swelling soils absorb water.Soil swelling and deformation has great influence on soil water infiltration process.Based on Green-Ampt,an algorithm considered soil swelling and deformation was proposed for simulating infiltration into swelling soil under un steady rainfall (GJGAM).The soil saturated hydraulic conductivity and soil saturated water content considered soil swelling were introduced to account for the effect of soil swelling on soil rainfall-infiltration,and could be approximately determined by soil physical properties.Meanwhile,the model (GJGAM) and the traditional Green-Ampt model without considering soil swelling (TGAM) were applied to simulate runoff rate and cumulative infiltration,and compared with the observed data in the experiments.The results indicate that the calculated runoff rate and cumulative infiltration by the GJGAM model were all in good agreement with the observed values.However,when using the TGAM model,the calculated runoff rate was less than the observed value,and the calculated cumulative infiltration were larger than the observed value.关键词
土壤膨胀性/黄土/Green-Ampt模型/土壤入渗产流Key words
soil swelling/Loess soil/Green-Ampt model/soil infiltration-runoff分类
农业科技引用本文复制引用
甘永德,贾仰文,刘欢,牛存稳,仇亚琴..膨胀性土壤降雨入渗产流模型[J].水利学报,2017,48(10):1220-1228,1239,10.基金项目
国家重点基础研究发展规划项目(2015CB452701) （2015CB452701）
国家自然科学基金项目(51379215,50939006) （51379215,50939006）
流域水循环模拟与调控国家重点实验室自主研究课题(2016ZY03) （2016ZY03）
