Spatial-temporal distribution of debris flow impact pressure on rigid barrier

doi:10.1007/s11629-018-5316-4

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

	Spatial-temporal distribution of debris flow impact pressure on rigid barrier
	Liu Dao-chuan1,2,3 ; You Yong1,2 ; Liu Jin-feng1,2 ; Li Yong1,2 ; Zhang Guang-ze 4; Wang Dong 4
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019-04-01
卷号	16 期号:4 页码:793-805
关键词	Debris flow Impact force Grain composition Spatio-temporal distribution Dynamic coefficient
ISSN号	1672-6316
DOI	10.1007/s11629-018-5316-4
通讯作者	You Yong(yyong@imde.ac.cn)
产权排序	1
文献子类	Article
英文摘要	Grain composition plays a vital role in impact pressure of debris flow. Current approaches treat debris flow as uniform fluid and almost ignore its granular effects. A series of flume experiments have been carried out to explore the granular influence on the impact process of debris flow by using a contact surface pressure gauge sensor (Tactilus (R), produced by Sensor Products LLC). It is found that the maximum impact pressure for debris flow of low density fluctuates drastically with a long duration time while the fluctuation for flow of high density is short in time, respectively presenting logarithmic and linear form in longitudinal attenuation. This can be ascribed to the turbulence effect in the former and grain collisions and grain-fluid interaction in the latter. The horizontal distribution of the impact pressure can be considered as the equivalent distribution. For engineering purposes, the longitudinal distribution of the pressure can be generalized to a triangular distribution, from which a new impact method considering granular effects is proposed.
资助项目	Research on Prevention and Control Technology of Ecological Debris Flow Disasters from Department of Land and Resources of Sichuan Province[KJ-2018-24] ; Natural Science Foundation of China[41471011] ; Natural Science Foundation of China[41772343] ; Chinese Academy of Sciences and Organization Department of Sichuan Provincial Party Committee Light of West China Program ; Key International S&T Cooperation Projects[2016YFE0122400]
WOS关键词	GRAIN COMPOSITION ; LANDSLIDE ; PHYSICS ; DESIGN ; FORCE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000464752500006
资助机构	Research on Prevention and Control Technology of Ecological Debris Flow Disasters from Department of Land and Resources of Sichuan Province ; Natural Science Foundation of China ; Chinese Academy of Sciences and Organization Department of Sichuan Provincial Party Committee Light of West China Program ; Key International S&T Cooperation Projects
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/25876]
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.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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.China Railway Eryuan Engn Grp Co LTD, Chengdu 610031, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Liu Dao-chuan,You Yong,Liu Jin-feng,et al. Spatial-temporal distribution of debris flow impact pressure on rigid barrier[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(4):793-805.
APA	Liu Dao-chuan,You Yong,Liu Jin-feng,Li Yong,Zhang Guang-ze,&Wang Dong.(2019).Spatial-temporal distribution of debris flow impact pressure on rigid barrier.JOURNAL OF MOUNTAIN SCIENCE,16(4),793-805.
MLA	Liu Dao-chuan,et al."Spatial-temporal distribution of debris flow impact pressure on rigid barrier".JOURNAL OF MOUNTAIN SCIENCE 16.4(2019):793-805.