| 地表条件对坡面产流的影响 |
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| 引用本文： | 向华,刘青泉,李家春. 地表条件对坡面产流的影响[J]. 水动力学研究与进展(A辑), 2004, 19(6): 774-782 |
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| 作者姓名： | 向华 刘青泉 李家春 |
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| 作者单位： | 中国科学院力学研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金重点项目(19832060，10332050)，中国科学院知识创新方向项目(KJCX2 SW L1 4) |
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| 摘 要： | 本文将复杂地表条件对坡面流运动的影响概化为阻力的变化，运用运动波理论和修正的Green-Ampt入渗模型，建立了能够反映地表条件影响的坡面降雨入渗产流模型，数值结果与实验符合较好，运用该模型分析了植被、地形、坡长、坡度等地表条件对坡面产流过程的影响。
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| 关 键 词： | 坡面流 阻力 植被 地形 运动波模型 入渗模型 |
| 文章编号： | 1000-4874(2004)06-0774-09 |
Influences of slope surface conditions on the runoff generation |
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| XIANG Hua,LIU Qing-quan,LI Jia-chun. Influences of slope surface conditions on the runoff generation[J]. Chinese Journal of Hydrodynamics, 2004, 19(6): 774-782 |
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| Authors: | XIANG Hua LIU Qing-quan LI Jia-chun |
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| Abstract: | In this paper, the influences of slope surface conditions, such as slope length,slope gradient,vegetaon coverage, micro-topography, are analyzed in the estimation of resistance. The resistance is described by Darcy-Weisbach coefficient and divided into three parts: grain resistance, form resistance and wave resistance. Combing one-dimensional kinematic wave theory with revised Green Ampt infiltration model, a model of runoff generation has been established. The effectiveness of the model is validated by Lima's experimental data. From the resuhs of numerical simulation, the functions of micro-topography and vegetation coverage are further discussed, and some other valuable conclusions are also obtained. |
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| Keywords: | overland flow resistance vegetation micro-topography kinematic wave theory Infiltration model |
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