CAJ | 학술논문

基于室内试验资料，建立了非稳定降雨条件下考虑空气阻力作用的Green-Ampt模型（Modified Green-Ampt Model， MGAM），其包括非稳定降雨条件下土壤积水入渗过程和非积水入渗过程、湿润锋运移过程、积水入渗状态和非积水入渗状态相互转化过程。为了量化空气阻力作用影响程度，引入了饱和度系数Sa，并提出饱和度系数计算方法。同时应用MGAM和传统的Green-Ampt模型（Tranditional Green-Ampt Model，TGAM）模拟了径流强度、土壤累计入渗量和土壤剖面含水量，并和实测值进行了对比分析。结果表明：MGAM模型模拟的土壤累计入渗量、土壤含水量和径流强度均与实测结果吻合良好，而TGAM模型模拟土壤累计入渗量、剖面含水量均大于实测值，而径流强度小于实测值。
기우실내시험자료，건립료비은정강우조건하고필공기조력작용적Green-Ampt모형（Modified Green-Ampt Model， MGAM），기포괄비은정강우조건하토양적수입삼과정화비적수입삼과정、습윤봉운이과정、적수입삼상태화비적수입삼상태상호전화과정。위료양화공기조력작용영향정도，인입료포화도계수Sa，병제출포화도계수계산방법。동시응용MGAM화전통적Green-Ampt모형（Tranditional Green-Ampt Model，TGAM）모의료경류강도、토양루계입삼량화토양부면함수량，병화실측치진행료대비분석。결과표명：MGAM모형모의적토양루계입삼량、토양함수량화경류강도균여실측결과문합량호，이TGAM모형모의토양루계입삼량、부면함수량균대우실측치，이경류강도소우실측치。
Based on the result of scientific experiments, an algorithm considered air resistance effect was proposed for simulating infiltration into layered soil profile under unsteady rainfall. The model includes pond?ing and no ponding infiltration under unsteady rainfall, tracks the movement of wetting front, checks the ponding status, and handles the shift between ponding and no ponding conditions. A saturation coefficient (Sa) was introduced to account for the effect of air resistance. The Sa could be approximately determined by soil physical properties. At the same time, the model (MGAM) and the traditional Green-Ampt model (TGAM) were applied to simulate runoff rate, soil water content and cumulative infiltration, and compared with the observed data in the experiments. The results indicate that calculated runoff rate, soil water con?tent and soil cumulative infiltration by MGAM are all in good agreement with that of the observed,but the soil water content and soil cumulative infiltration calculated by TGAM are larger than the observed, and the calculated runoff rate is less than the observed.