Estimating the maximum impact force of dry granular flow based on pileup characteristics

doi:10.1007/s11629-019-5428-5

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

	Estimating the maximum impact force of dry granular flow based on pileup characteristics
	Xiao Si-you1,2 ; Su Li-jun1,2,3 ; Jiang Yuan-jun1,2 ; Mehtab Alam 1,2; Li Cheng1,2,3 ; Liu Dao-chuan1,2,4
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:10 页码:2435-2452
关键词	Dry granular flow Tilted retaining wall Impact force Discrete element method Pileup height
ISSN号	1672-6316
DOI	10.1007/s11629-019-5428-5
通讯作者	Jiang Yuan-jun(yuanjun.jiang.civil@gmail.com)
产权排序	1
文献子类	Article
英文摘要	The maximum normal impact resultant force (NIRF) is usually regarded as the sum of the static earth pressure of the dead zone and the dynamic impact pressure of the flowing layer. The influence of the interaction between the flowing layer and dead zone on the impact force is ignored. In this study, we classified two impact models with respect to the pileup characteristics of the dead zone. Then, we employed the discrete element method to investigate the influences of the pileup characteristics on the impact force of dry granular flow on a tilted rigid wall. If the final pileup height is equal to the critical value, the maximum NIRF can be estimated using a hydrostatic model, because the main contribution to the maximum NIRF is the static earth pressure of the dead zone. If the final pileup height is less than the critical value, however, the particles in the dead zone are squeezed along the slope surface by the impact of the flowing layer on the dead zone, and because of shear effects, the flowing layer causes an entrainment in the dead zone. This results in a decrease in the volume of the dead zone at the moment of maximum NIRF with increases in the slope angle. As such, the maximum NIRF mainly comprises the instant impact force of the flowing layer, so hydro-dynamic models are effective for estimating the maximum NIRF. Impact models will benefit from further study of the components and distribution of the impact force of dry granular flow.
电子版国际标准刊号	1993-0321
WOS关键词	DEBRIS-FLOW ; PARTICLE-SIZE ; RIGID BARRIER ; LANDSLIDE ; SEGREGATION ; PREDICTION ; AVALANCHES ; RUNUP
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000489956000017
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/31301]
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	Jiang Yuan-jun
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.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 5.Res Inst Ltd, Sichuan Highway Planning, Design, Chengdu 610041, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Xiao Si-you,Su Li-jun,Jiang Yuan-jun,et al. Estimating the maximum impact force of dry granular flow based on pileup characteristics[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(10):2435-2452.
APA	Xiao Si-you,Su Li-jun,Jiang Yuan-jun,Mehtab Alam,Li Cheng,&Liu Dao-chuan.(2019).Estimating the maximum impact force of dry granular flow based on pileup characteristics.JOURNAL OF MOUNTAIN SCIENCE,16(10),2435-2452.
MLA	Xiao Si-you,et al."Estimating the maximum impact force of dry granular flow based on pileup characteristics".JOURNAL OF MOUNTAIN SCIENCE 16.10(2019):2435-2452.