| 土壤侵蚀链内细沟浅沟切沟流动力机制研究 |
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| 引用本文： | 王文龙,雷阿林,李占斌,唐克丽.土壤侵蚀链内细沟浅沟切沟流动力机制研究[J].水科学进展,2003,14(4):471-475. |
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| 作者姓名： | 王文龙 雷阿林 李占斌 唐克丽 |
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| 作者单位： | 1.中国科学院, 水利部, 水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西, 杨凌, 712100; |
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| 基金项目： | 中国科学院西部行动项目(KZCX1 10 04)，国家自然科学基金资助项目(49671052)，黄土高原土壤侵蚀与旱地农业国家重点实验室基金资助项目(10501 78)~~ |
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| 摘 要： | 通过模拟降雨试验的方法,系统研究了细沟流流速与流量、水深与流量、流速与水深及阻力系数与雷诺数之间的关系,雨强与坡度对细沟流水力特性的影响,不同细沟流流型、流态及水动力要素作用下的侵蚀特点,并对浅沟与切沟流的水动力特性及侵蚀规律进行了初步探讨.研究结果对于揭示土壤侵蚀链内不同侵蚀方式下的水沙流动力学机制,以及土壤侵蚀演化规律具有重要意义.
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| 关 键 词： | 土壤侵蚀链 细沟 浅沟 切沟 动力机制 |
| 文章编号： | 1001-6791(2003)04-471-05 |
| 收稿时间： | 2002-06-11 |
| 修稿时间： | 2002年6月11日 |
Study on dynamic mechanism of rills,shallow furrows and gully in the soil erosion chain |
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| WANG Wen-long,LEI A-lin,LI Zhan-bin,TANG Ke-li.Study on dynamic mechanism of rills,shallow furrows and gully in the soil erosion chain[J].Advances in Water Science,2003,14(4):471-475. |
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| Authors: | WANG Wen-long LEI A-lin LI Zhan-bin TANG Ke-li |
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| Institution: | 1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China;2.Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China;3.Yangtze Valley Water Resources Protection Bureau, MWR and SBEP, Wuhan 430051, China;4.Xi'an University of Technology, Xi'an 710048, China |
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| Abstract: | Based on the simulated rainfall experiments,the relationships between the velocity-discharge,depth of runoff-discharge,the velocity-the depth,resistance coefficient with the Reynolds number in rill runoff are established systematically studied; the effects of rain intensity and slope on hydraulic feature,the erosion characteristics of various runoff types and runoff fluidization states and hydro-power elements,and the hydro-driving characteristics and erosion processes in shallow furrow and gully are researched preliminarily.The results are very important to explain the dynamic mechanism of sediment-water flow under various types of gully erosion in erosion chain and occurrence and evolution of soil erosion chain. |
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| Keywords: | soil erosion chain rill shallow furrow gully dynamic mechanism |
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