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Experimental study on runoff dynamic processes on loess hillslope
Authors
刘俊娥
张宽地
+4 more
王占礼
袁殷
陈浩
高素娟
Publication date
1 January 2010
Publisher
Abstract
薄层流径流过程是最基本的坡面水文过程,揭示黄土坡面薄层流产流过程机理对于认识坡面产流理论具有重要意义。试验采用人工模拟降雨试验方法,对黄土坡面薄层流产流过程进行研究,取得了如下结果:(1)坡面薄层流径流率随降雨历时的增长呈增加趋势,可用幂函数方程很好地描述,开始产流后的2~10 min内增加很快,以后逐渐趋于平缓、稳定;(2)不同坡度条件下,坡面薄层流径流深均随雨强的增大而呈显著增加,可用线性方程很好地表示;(3)不同雨强条件下,坡面薄层流径流深随坡度的变化趋势相似,皆可用对数线性方程描述;(4)不同雨强条件下,薄层流径流深随坡长增大总体呈增加趋势,可用倒数线性方程描述;(5)雨强、坡度、坡长对坡面薄层流径流深的综合影响可表述为三元线性经验方程,其中雨强的影响最大,坡度和坡长的影响小
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018