摘要
本文采用运动波理论和两次改进后的Green Ampt入渗模型建立了坡面降雨入渗产流的动力学模型 ,并得到了实验资料的良好验证。运用该模型研究了简单坡面上降雨入渗产流的动力学规律 ,分析了雨强、土壤初始含水量、渗透系数、坡面阻力 ,以及坡长、坡度等因素对坡面产流过程的影响规律 ,得出了一些有益的结论。
In this paper,a numerical model of runoff generation on the slope is presented.The one dimensional kinematic wave theory combined with the Green\|Ampt infiltration model revised twice by Mein & Larson(1973)and Chu(1978)is used in it.The effectiveness of the model is tested by some experimental data.Further more,extensive situations are calculated and the dynamic laws of main parameters,including rainfall intensity,initial moisture content,infiltration rate,resistance,slope length and slope gradient,are analyzed.Some valuable conclusions are put forward.
出处
《泥沙研究》
CSCD
北大核心
2001年第4期61-67,共7页
Journal of Sediment Research
基金
国家自然科学重点基金 (19832 0 6 0 )
土壤侵蚀和旱地农业国家重点实验室基金资助项目
