ISWC OpenIR  > 水保所知识产出(1956---)
雨滴击溅与薄层水流混合侵蚀的输沙机理
郑腾辉1; 邢媛媛2,3; 何凯旋3; 滕飞3; 李光录1,3
2016
Source Publication西北农林科技大学学报(自然科学版)
Volume44Issue:3Pages:211-218
Abstract

【目的】针对雨滴击溅与薄层水流混合侵蚀过程输沙机理研究中存在的问题,研究雨滴击溅对坡面
径流输沙的影响。【方法】采用室内人工模拟降雨试验,以土娄土、黄绵土和黑垆土为供试土壤,在不同雨滴直径(直径
2.22,2.68和3.04mm)、不同坡度(0°,2°和4°)和薄层水流厚度(0,2,4和6mm)条件下,分析单雨滴击溅时,泥沙溅
蚀量与水层厚度的关系;多雨滴击溅时,泥沙溅蚀量与薄层水流厚度的关系,分别对二者关系进行拟合;同时,对于多
雨滴击溅时,不同薄层水流厚度下黄绵土泥沙溅蚀量和雨滴动能的关系进行了分析。【结果】单雨滴击溅时,泥沙溅
蚀量随水层厚度的增加而减少,且雨滴直径越大其扰动水层厚度越大,当雨滴直径由2.22mm增加到3.04mm时,
平均扰动水层厚度由10mm增加到14.67mm。多雨滴击溅时,在相同的坡度(0°~4°),不同土壤和雨滴直径下,随薄
层水流厚度的增加,泥沙溅蚀量呈先升后降趋势;当薄层水流厚度相同时,随雨滴直径的增加,泥沙溅蚀量呈增大趋
势。当雨滴动能不变时,泥沙溅蚀量随着薄层水流厚度的增加而增大;当薄层水流厚度一定时,泥沙溅蚀量随雨滴动
能的增加而增大。【结论】建立了单雨滴击溅和多雨滴击溅条件下扰动水层厚度关与泥沙溅蚀量的关系式。

Other Abstract

【Objective】Effect of raindrop splash on slope runoff and sediment transport was studied in
this paper.【Method】In the indoor artificial rainfall simulation,different slopes(0°,2°and 4°),different
sheep flow thicknesses(0,2,4and 6mm)and different raindrop diameters(2.22,2.68and 3.04mm)were
tested.The relationships between sediment splash erosion amount and the deep layer of water for single
raindrop splashing and between sediment splash erosion amount and sheet flow thickness for multiple raindrop
splashing were analyzed and fitted.The relationship of sediment splash erosion amount of yellow soil
and raindrop kinetic energy under different sheet flow thicknesses was also analyzed.【Result】For single
raindrop splashing,splash amount decreased with the increase of sheet flow thickness,raindrop diameter
increased with the increased of disturbance layer thickness,and the average thickness of water resisting disturbance
increased from 10to 14.67mm when raindrop diameter increased from 2.22to 3.04mm.Formultiple raindrop splashing,sediment splash erosion amount augmented firstly then decreased as the increased
of sheet flow thickness.With same thickness,sediment splash erosion amount increased with the
increase of raindrop diameter.When raindrop kinetic energy remained same,sediment splash erosion amount
reduced with the increase of shallow flow thickness.When thickness did not change,sediment splash
erosion amount increased with the increase of raindrop kinetic energy.【Conclusion】This study established
the relationships between single raindrop splash amount and sediment layer thickness as well as between
sediment splash erosion amount and multiple raindrops splash amount.

Keyword模拟降雨 薄层水流 混合侵蚀 雨滴动能 雨滴击溅 输沙机理
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8702
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所
2.中国科学院新疆生态与地理研究所
3.西北农林科技大学b资源环境学院
Recommended Citation
GB/T 7714
郑腾辉,邢媛媛,何凯旋,等. 雨滴击溅与薄层水流混合侵蚀的输沙机理[J]. 西北农林科技大学学报(自然科学版),2016,44(3):211-218.
APA 郑腾辉,邢媛媛,何凯旋,滕飞,&李光录.(2016).雨滴击溅与薄层水流混合侵蚀的输沙机理.西北农林科技大学学报(自然科学版),44(3),211-218.
MLA 郑腾辉,et al."雨滴击溅与薄层水流混合侵蚀的输沙机理".西北农林科技大学学报(自然科学版) 44.3(2016):211-218.
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