Bed load transport rates during scouring and armoring processes

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2010 > Vol7 No.3

	Bed load transport rates during scouring and armoring processes
	Yang Fengguang ; Liu Xingnian ; Cao Shuyou ; Huang Er
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2010-09
卷号	7 期号:3 页码:215–225
关键词	Nonuniform sediment angle of repose bed scour armoring incipient velocity bed load transport
ISSN号	1672-6316
通讯作者	Huang, E
英文摘要	Dambreak-induced bed scouring may undermine the foundation of bridge piers and other structures, and that destruction can pose a serious threat. Consequently, this paper aims at exploring the mechanisms of scouring and armoring. Firstly, the incipient velocity for nonuniform sediment particles was studied, and a formula was derived based on the angle of repose of nonuniform sediment. The results showed that the mechanism of incipient motion for sand and fine gravel differed from that for coarse gravel and cobbles. Also, comparison between experimental and field data shows that the results from the proposed formula agree well with those observed for all conditions. Secondly, a birth-death, immigration-emigration Markov process was developed to describe the bed load transport rate associated with scouring and armoring. The comparison between experimental data and computed results shows that our model can predict the bed load transport rate, although there may be some limitations, the chief of which is that there are many variables in the model to be determined through experiment. This makes its application in river engineering inconvenient.
语种	英语
公开日期	2013-08-12
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5897]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2010_Vol7 No.3
推荐引用方式 GB/T 7714	Yang Fengguang,Liu Xingnian,Cao Shuyou,et al. Bed load transport rates during scouring and armoring processes[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(3):215–225.
APA	Yang Fengguang,Liu Xingnian,Cao Shuyou,&Huang Er.(2010).Bed load transport rates during scouring and armoring processes.JOURNAL OF MOUNTAIN SCIENCE,7(3),215–225.
MLA	Yang Fengguang,et al."Bed load transport rates during scouring and armoring processes".JOURNAL OF MOUNTAIN SCIENCE 7.3(2010):215–225.