| 人工植被分布变化对坡面流阻力及局部水头损失系数的影响研究 |
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| 引用本文： | 李海波,陈鑫,张扬,张永禄,刘其世. 人工植被分布变化对坡面流阻力及局部水头损失系数的影响研究[J]. 吉林水利, 2014, 0(9): 9-12 |
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| 作者姓名： | 李海波 陈鑫 张扬 张永禄 刘其世 |
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| 作者单位： | 四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 |
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| 基金项目： | 国家自然科学基金项目（41171016）,长江科学院开放研究基金资助项目（CKWV2012313/KY） |
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| 摘 要： | 基于室内坡面流实验,研究了人工植被分布变化对坡面流水动力学特性的影响。试验包括"细管整齐排列"、"细管1/2错开排列"、"细管1/4错开排列"、"粗管1/2错开排列"等植被分布方式。研究结果表明植被分布变化对坡面流扰动程度的影响显著,从而使得不同植被分布方式下的坡面流达西阻力系数、局部水头损失系数差异性很大。而随流量增大达西阻力系数、局部水头损失系数都呈现先减小后增大的趋势。
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| 关 键 词： | 坡面流 植被分布 阻力系数 局部水头损失系数 |
Experimental Study on Changes of Artificial Vegetation Distribution on Hydraulic Characteristics and Local Head Losses of Overland Flow |
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| LI Hai-bo,Chen Xin,Zhang Yang,Zhang Yong-lu,Liu Qi-shi. Experimental Study on Changes of Artificial Vegetation Distribution on Hydraulic Characteristics and Local Head Losses of Overland Flow[J]. Jilin Water Resources, 2014, 0(9): 9-12 |
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| Authors: | LI Hai-bo Chen Xin Zhang Yang Zhang Yong-lu Liu Qi-shi |
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| Affiliation: | LI Hai-bo, Chen Xin, Zhang Yang, Zhang Yong-lu, Liu Qi-shi |
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| Abstract: | With the influence of different distribution of artificial vegetation ,the characteristics of overland flow and the corresponding sediment transport were herein investigated experimentally.The experimental distribution of artificial vegetation consisted of uniform and non-uniform modes.The results show that the flow resistance coefficient and the local head losses of overland flow were significantly affected by the different vegetation distribution.However the Darcy-Weisbath resistance coefficient and the local head losses first decreases and then rises with the increasing of flow rate. |
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| Keywords: | Overland flow Vegetation distribution Flow resistance coefficient Local head losses |
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