Time-Dependent Sediment Transport Subjected to Downward Seepage

被引：0
|
作者：
刘小谢 [1 ,2 ]
赵以明 [3 ]
白玉川 [1 ,2 ]
机构：
[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University
[2] Institute for Sedimentation on River and Coastal Engineering,Tianjin University
[3] School of Civil Environmental Engineering,Nanyang Technological University
来源：
Transactions of Tianjin University | 2014年 / 02期
关键词：
time effect; suction; seepage; sediment transport rate;
D O I：
暂无
中图分类号：
P333 [水文分析与计算];
学科分类号：
081501 ;
摘要：
Experiments were conducted using cohesionless sand particles with median diameter of 0.48 mm to investigate the time variation of sediment transport rate under the influence of local downward seepage.The experimental results show that the bedload transport rate in terms of volumetric sediment transport rate per unit width increased rapidly with time in the presence of suction,eventually reaching a peak beyond which it started to decrease.The trend of reduction was significantly reduced beyond 8 400 s after the test started.The analytical expression was derived in terms of dimensionless sediment transport rate and dimensionless time.The hypothesized relationships were compared with the experimental data,indicating a good agreement with each other.
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页码：133 / 138
页数：6
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