CAJ | 학술논문

采用人工模拟降雨方法，在用蒸发法测定非饱和土壤物理参数和基础上，运用修正的Green-Ampt入渗模型，结合退水曲线法和坡面运动波模型，研究了9场不同雨强和不同历时模拟降雨的产流过程。结果表明模拟误差在11.0 ％～30.7 ％间变化，80 ％的模拟误差可控制在18 ％以内，说明用非饱和土壤物理参数可以进行一般精度要求的坡面径流过程模拟。
채용인공모의강우방법，재용증발법측정비포화토양물리삼수화기출상，운용수정적Green-Ampt입삼모형，결합퇴수곡선법화파면운동파모형，연구료9장불동우강화불동력시모의강우적산류과정。결과표명모의오차재11.0 ％～30.7 ％간변화，80 ％적모의오차가공제재18 ％이내，설명용비포화토양물리삼수가이진행일반정도요구적파면경류과정모의。
Runoff processes simulation is very significant for soil erosion mechanism analyzing and erosion model building.In the past two decades,many runoff simulation model were built in China based on different conditions,however,they were difficult to qpply widely.Therefore,building one new model is necessary.In order to find one easy and exact way to simulate runoff process on slope land,9 simulated rainfall experiments were carried out on one plot with 10mlength,2m width and 15 degree at Ansai field station.Soil physical properties are the basic information to influence soil infiltration and runoff appeating.So soil physical properties were measured using 2 soil samples taking from polt for dach rainfall event by means of STAR-1 and unsaturated soil arameters, which was analyses by Appia program, were obtained.Those parameters were used to calculate soil absorptive parameter Sf.And then,the modified Green &Ampt infiltration model,Retention Curve method and kinematic wave model were used to simulate runoff processes.The results indicate that using unsaturated soil physical properties to simulate runoff processes are available and the relative errors vary from 11.0 to 30.7%,However, more 80% simulated drror are less than 18 percent and it demonstrates using unsaturated soil physical properties to predict runoff process is reasonable and should be used widely.