Experimental study on non-uniform bedload instantaneous transport rate

被引：0
|
作者：
Xu L. [1 ,2 ,3 ]
Liu C. [1 ,2 ,3 ]
Cao W. [1 ,2 ,3 ]
机构：
[1] State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing
[2] Key Laboratory of Hydraulic and Sediment Science and River Harnessing of the Ministry of Water Resources, Beijing
[3] Department of Sediment Research, China Institute of Water Resources and Hydropower Research, Beijing
来源：
Cao, Wenhong (erosion@iwhr.com) | 1600年 / International Research and Training Center on Erosion and Sedimentation and China Water and Power Press卷 / 47期
关键词：
Ballio method; Non-uniform bed load; Sediment transporting characteristics; The flume experiment; The instantaneous sediment transport rate;
D O I：
10.13243/j.cnki.slxb.20150838
中图分类号：
学科分类号：
摘要：
Bedload discharge is an important content of sediment movement mechanics. At present the study of bedload sediment transport rate mostly focused on time average rate, while instantaneous sediment rate is relatively fewer. Firstly, Ballio method for calculating uniform bedload instantaneous transport rate was introduced, and the improved Ballio method was derived to calculate non-uniform instantaneous transport rate. Secondly, the instantaneous velocity of different sediment particles was measured in flume experiment, and substituted into the improved Ballio formula, the instantaneous transport rate can be obtained. Then definition method was used to calculate the bedload instantaneous transport rate, compared with Ballio method, the results of two methods is relatively close. It is feasible the improved Ballio method used to calculate the non-uniform bedload instantaneous transport rate. Meanwhile, the characteristics of the non-uniform bedload instantaneous transport rate were revealed in this paper, such as instability on time, non-uniformity on space and the intermittency in the sediment movement process. © 2016, China Water Power Press. All right reserved.
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页码：236 / 244
页数：8
相关论文
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