| 坡沟系统坡面径流流态及水力学参数特征研究 |
| |
| 引用本文： | 肖培青,郑粉莉,姚文艺.坡沟系统坡面径流流态及水力学参数特征研究[J].水科学进展,2009,20(2):236-240. |
| |
| 作者姓名： | 肖培青 郑粉莉 姚文艺 |
| |
| 作者单位： | 1.黄河水利科学研究院水利部黄河泥沙重点实验室, 河南, 郑州, 450003; |
| |
| 基金项目： | 国家重点基础研究发展规划(973计划)，西北农林科技大学创新团队建设计划，黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金 |
| |
| 摘 要： | 利用变坡度坡沟系统概化模型和人工模拟降雨试验,定量分析了在60、90和130mm/h降雨强度下坡沟系统坡面径流流态及水力学参数特征。结果表明,上方汇水和降雨强度的增大使坡沟系统水流雷诺数和弗劳德数呈明显增大,水流流态由缓流演变为急流,坡面水流阻力系数明显减小,从而使坡沟侵蚀产沙量显著增大。
|
| 关 键 词： | 坡沟系统 坡面径流 径流流态 水力学参数 模拟降雨 |
| 收稿时间： | 2008-01-18 |
Flow pattern and hydraulic parameter characteristics in hillslope-gullyslope system |
| |
| XIAO Pei-qing,ZHENG Fen-li,YAO Wen-yi.Flow pattern and hydraulic parameter characteristics in hillslope-gullyslope system[J].Advances in Water Science,2009,20(2):236-240. |
| |
| Authors: | XIAO Pei-qing ZHENG Fen-li YAO Wen-yi |
| |
| Institution: | 1.Institute of Yellow River Hydraulic Research, Key Laboratory of Yellow River Sediment Research of Ministry of Water Resources, Zhengzhou 450003, China;2.State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation CAS & MWR, Yangling 712100, China;3.College of Resources and Environment, Northwest A & F University, Yangling 712100, China |
| |
| Abstract: | Flow pattern and hydraulic parameter characteristics are quantified under the rainfall intensities of 60,90,and 130 mm/h using the hillslope-gullyslope system including different slope gradients with the simulated rainfall experiment.The resups show that the hillslope runoff discharging into gullyslope or the increase of the rainfall intensity will result in the increase of the Reynolds number and Froude number and the shift of flow pattern from the stratum flow into torrent flow.The hillslope runoff discharging into hillslope-gullyslope system causes the decrease of the Darcy-Weisbach coefficient and the increase of the sediment delivery at the same time. |
| |
| Keywords: | |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《水科学进展》浏览原始摘要信息 |
| 点击此处可从《水科学进展》下载免费的PDF全文 |
|
