A two-layer model for the intrusion of two-phase debris flow into a river

doi:10.1144/qjegh2017-071

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

	A two-layer model for the intrusion of two-phase debris flow into a river
	Liu, Wei1,2 ; He, Siming1,2,3
刊名	QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
	2018-02-01
卷号	51 期号:1 页码:113-123
ISSN号	1470-9236
DOI	10.1144/qjegh2017-071
英文摘要	The intrusion of debris flow into a river is a common phenomenon that usually occurs in mountainous areas. Debris flow, unlike a landslide, has a complex component that makes its simulation more difficult. In this paper, a two-layer, 2D model is presented for use in the preliminary study of debris flow intruding into a river. In this model, the upper layer is assumed to be a single-phase flow and the lower layer to be a solid-liquid two-phase flow. The drag force between the fluid and solid phases of the debris flow is considered in this model. The basal friction term of the debris flow is considered as the phase-averaged value of the solid shear stresses and fluid shear stresses. A numerical method based on the finite-volume method is proposed to solve the complex model equations involved. Several numerical tests were performed to confirm the feasibility of the proposed numerical method and model. The numerical results yielded a reasonable prediction of debris flow motion and tsunami wave generation and illustrate the complex interplay between the debris flow and tsunami waves. The characteristics of the river have extra effects on the distribution of subaqueous debris flow (e.g. flow velocity) and should not be neglected.
语种	英语
出版者	GEOLOGICAL SOC PUBL HOUSE
WOS记录号	WOS:000429072000013
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/20907]
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	Liu, Wei
作者单位	1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Chengdu, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wei,He, Siming. A two-layer model for the intrusion of two-phase debris flow into a river[J]. QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY,2018,51(1):113-123.
APA	Liu, Wei,&He, Siming.(2018).A two-layer model for the intrusion of two-phase debris flow into a river.QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY,51(1),113-123.
MLA	Liu, Wei,et al."A two-layer model for the intrusion of two-phase debris flow into a river".QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY 51.1(2018):113-123.