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| 细沟侵蚀动力过程输沙能力试验研究 | |
| 引用本文： | 雷廷武,张晴雯,赵军,唐泽军. 细沟侵蚀动力过程输沙能力试验研究[J]. 土壤学报, 2002, 39(4): 476-482 |
| 作者姓名： | 雷廷武 张晴雯 赵军 唐泽军 |
| 作者单位： | 1. 中国科学院水利部水土保持研究所,陕西杨凌,712100;中国农业大学水利与土木工程学院,北京,100083 2. 中国科学院水利部水土保持研究所,陕西杨凌,712100 3. 中国农业大学水利与土木工程学院,北京,100083 |
| 基金项目： | 中国科学院"百人计划"项目资助 |
| 摘 要： | 细沟水流的输沙能力是土壤侵蚀的重要参数之一,对于土壤侵蚀预报和土壤侵蚀过程模拟尤为重要。在不考虑土壤团粒结构条件下,根据集中稳定水流条件下侵蚀产沙随沟长增加而增加并将最终趋近于水流输沙能力的事实,提出了通过改变沟长来量测水流输沙能力的实验室水槽测量方法。相应地提出了根据试验数据计算水流输沙能力的函数表达式。用一种粉粘（黄土）土壤,进行了一系列（405次）室内水槽摹拟试验。采用五种坡度（5°,10°,15°,20°,25°）、三个流量（2,4,8 L min-1）的细沟侵蚀产沙数据,分析了输沙能力与沟坡、入流量的相互关系。 |
| 关 键 词： | 细沟侵蚀 动力侵蚀过程 输沙能力 集中水流 |
| 收稿时间： | 2000-09-20 |
| 修稿时间： | 2000-09-20 |
LABORATORY STUDY ON SEDIMENT TRANSPORT CAPACITY IN THE DYNAMIC PROCESS OF RILL EROSION |
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| Lei Ting-wu,Zhang Qing-wen,Zhao Jun Tang and Ze-jun. LABORATORY STUDY ON SEDIMENT TRANSPORT CAPACITY IN THE DYNAMIC PROCESS OF RILL EROSION[J]. Acta Pedologica Sinica, 2002, 39(4): 476-482 | |
| Authors: | Lei Ting-wu Zhang Qing-wen Zhao Jun Tang Ze-jun |
| Affiliation: | State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soiland Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 71210;Faculty of Irrigation and Civil Engineering, China Agricultural University, Beijing 100083;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soiland Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 71210;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soiland Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 71210;Faculty of Irrigation and Civil Engineering, China Agricultural University, Beijing 100083 |
| Abstract: | Transport capacity of flowing water in a rill is one of the important parameters in soil erosion,especially in soil erosion prediction and soil erosion process modeling.Considering the fact that,under steady flow,sediment load increases with slope length and will finally approach the transport capacity,a laboratory flume experimental method with variable slope length is advanced for transport capacity determination. And a mathematical expression is suggested to estimate transport capacity with thus obtained experimental data.A series of 405 flume experiments were conducted with sand-clay(loess) soil.Transport capacity is related to slope and inflow rate,based on the experimental data under five slopes (5°,10°,15°,20°,25°),and three flow rates(2,4,8Lmin-1). |
| Keywords: | Rill erosion Dynamic soil erosion processes Sediment transport capacity Concen-trated flow |
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