| A study of the scour-fill threshold based on Lane's equilibrium relation: The lower Yellow River | |
| Xu J. X. | |
| 2015 | |
| 关键词 | Scour-fill threshold Lane's relation Channel sediment delivery ratio Lower Yellow River sediment delivery china erosion budget |
| 英文摘要 | The scour-fill threshold in river channels is an expression of scour-fill equilibrium, which may be understood as the balance between the river's sediment carrying capability and the sediment load imposed by the drainage basin. In the present study, the above capability-load relation is quantified using Lane's relation, gamma QJ-Q(s)D(50), wherein Q is water discharge, J is channel slope, Q(s) is sediment transport rate, D-50 is median size of bed material, and gamma is the specific weight of water. On this basis, we have established scour-fill thresholds for the lower Yellow River based on data from 141 flood events. The results show that the Q(s)D(50)-gamma QJ relation may well distinguish between the scour and fill flood events. The following equation has been established: SDRFE = 0.00099(gamma QJ)(0.90()Q(s)D(50))(-0.60), wherein SDRFE is channel sediment delivery ratio. From the equation, the scour-fill threshold is established as: Q(s)D(50) = 0.00001 (gamma QJ)(1.5). Starting from this formula, four possible options are proposed for sediment management of the lower Yellow River. (C) 2015 Elsevier B.V. All rights reserved. |
| 出处 | Geomorphology |
| 卷 | 250 |
| 页 | 140-146 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0169-555X |
| 内容类型 | SCI/SSCI论文 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38961]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xu J. X.. A study of the scour-fill threshold based on Lane's equilibrium relation: The lower Yellow River. 2015. |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论