Experimental study on discharge process regulation to debris flow with open-type check dams

doi:10.1007/s10346-020-01535-y

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

	Experimental study on discharge process regulation to debris flow with open-type check dams
	Sun Hao 2,3; You Yong 3; Liu Jinfeng 3; Zhang Guangze 1; Feng Tao 1; Wang Dong 1
刊名	LANDSLIDES
	2020
页码	DOI: 10.1007/s10346-020-01535-y
关键词	Debris flow Open-type check dams Process regulation Temporary blocking
ISSN号	1612-510X
DOI	10.1007/s10346-020-01535-y
产权排序	1
文献子类	Article; Early Access
英文摘要	Open-type check dams are widely used to mitigate debris-flow hazards in mountainous areas. However, the regulation function of dams is a non-trivial and still open issue. With the aim to better understand the process regulation of open-type check dam against debris flow, in this study, a series of specially designed flume experiments are conducted as well as contrast tests of closed-type dam. The effects of the debris-flow bulk density, opening form, and dam size are considered. Analysis of the flow patterns, discharge process, peak discharge, and flow duration give an insight into regulating detail. Results reveal that the regulation characteristics depend on the blocking performance of open structure. There are differences in the debris-flow hydrography after passing through an open-type or closed-type dam, and the temporary blocking phenomenon is found to play an important role in regulating the discharge process. Moreover, open-type dams produce a reduction and time lag in the peak discharge, and more effectively regulate the travel time of debris flow downstream than closed-type dam. The reduction ratio of peak discharge for narrow openings is similar to that of closed-type dam and decreases as the relative opening becomes wider. Finally, based on these regulation characteristics, the application of open-type dams for a novel form of debris flow mitigation is discussed from the perspective of balancing interception and regulation of sediment.
电子版国际标准刊号	1612-5118
语种	英语
WOS记录号	WOS:000571674100001
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46287]
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	You Yong
作者单位	1.China Railway Eryuan Engn Grp Co LTD, Chengdu 610031, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, 9 Block 4,Renminnanlu Rd, Chengdu 610041, Peoples R China;
推荐引用方式 GB/T 7714	Sun Hao,You Yong,Liu Jinfeng,et al. Experimental study on discharge process regulation to debris flow with open-type check dams[J]. LANDSLIDES,2020:DOI: 10.1007/s10346-020-01535-y.
APA	Sun Hao,You Yong,Liu Jinfeng,Zhang Guangze,Feng Tao,&Wang Dong.(2020).Experimental study on discharge process regulation to debris flow with open-type check dams.LANDSLIDES,DOI: 10.1007/s10346-020-01535-y.
MLA	Sun Hao,et al."Experimental study on discharge process regulation to debris flow with open-type check dams".LANDSLIDES (2020):DOI: 10.1007/s10346-020-01535-y.