Regulation effectiveness of a window-check dam on debris flows

doi:10.1016/j.enggeo.2019.03.020

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 > 山地灾害与地表过程重点实验室

	Regulation effectiveness of a window-check dam on debris flows
	Li, Shuai; You, Yong; Chen, Xiaoqing1 ; Liu, Jinfeng; Chen, Jiangang
刊名	ENGINEERING GEOLOGY
	2019-04-10
卷号	253 页码:205-213
关键词	Debris flow Window-check dam Sediment control Flume experiments Unit weight attenuation ratio Mass retention ratio
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2019.03.020
通讯作者	Chen, Xiaoqing(xqchen@imde.ac.cn)
英文摘要	Window-check dams are widely used to regulate sediment transport in debris-flow hazard mitigation. However, the effectiveness of window-check dams on modulating debris flows is still unclear. In this study, dimensional analyses combined with physical experiments were conducted to evaluate the sediment-trapping and particle regulating functions of a window-check dam. Results showed that both of the attenuation ratio of unit weight and (the difference between upstream and downstream divided by upstream) the retention ratio of mass (upstream divided by downstream) decreased with an increase in openings area, drain holes width, and bottom slope. However, the increase in inflow unit weight of debris-flow led to larger retention ratio of mass. Besides, an optimal attention ratio corresponding to dimensionless unit weight of 1.8 was found. Also, the particle sizes sorted by the window-check dam were found to be associated with the median grain size of sediment. Furthermore, two improved expressions were obtained to assess the effectiveness of window-check dams on trapping sediments. The comparison between these expressions and laboratory data is in reasonable agreement, serving a useful reference for the optimal design of check dams.
资助项目	Science and Technology Service Network Initiative[KFJ-STS-ZDTP-015] ; National Science Foundation of China[41661144028] ; National Science Foundation of China[41772343] ; Youth Innovation Promotion Association CAS[2017426] ; China Postdoctoral Science Foundation[2016M602716]
WOS关键词	SEDIMENT RETENTION ; LOESS PLATEAU ; SOIL-EROSION ; CATCHMENT ; EFFICIENCY ; MURCIA ; YIELD
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000467510400017
资助机构	Science and Technology Service Network Initiative ; National Science Foundation of China ; Youth Innovation Promotion Association CAS ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/26148]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Chen, Xiaoqing
作者单位	1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 3.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuai,You, Yong,Chen, Xiaoqing,et al. Regulation effectiveness of a window-check dam on debris flows[J]. ENGINEERING GEOLOGY,2019,253:205-213.
APA	Li, Shuai,You, Yong,Chen, Xiaoqing,Liu, Jinfeng,&Chen, Jiangang.(2019).Regulation effectiveness of a window-check dam on debris flows.ENGINEERING GEOLOGY,253,205-213.
MLA	Li, Shuai,et al."Regulation effectiveness of a window-check dam on debris flows".ENGINEERING GEOLOGY 253(2019):205-213.