IMHE OpenIR  > 山地灾害与地表过程重点实验室
A debris-flow impact pressure model combining material characteristics and flow dynamic parameters
Tang, Jin-bo; Hu, Kai-heng1
Corresponding AuthorHu, Kai-heng(khhu@imde.ac.cn)
2018
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume15Issue:12Pages:2721-2729
SubtypeArticle
Contribution Rank1
AbstractImpact force is a crucial factor to be considered in debris-resisting structure design. The impact of debris flow against a structural barrier depends not only on the flow dynamics but also on the barrier material. Based on the structural vibration equation and energy conservation law, a simple model for calculating debris-flow impact pressure is proposed, which includes the mechanical impedance of the material, debris-flow velocity and Froude number. Twenty-five impact tests have been conducted using different kinds of materials: steel, black granite, white granite, marble and polyvinyl chloride (PVC) board, and the ratio of the maximum impact time to the vibration period of the structure is determined for the model. It is found that the ratio's square root shows a linear relationship with the material solid Froude number. This indicates that the impedance of the structures plays an important role in the flow-barrier interaction. Moreover, the debrisflow impact force is found to decrease with the travel time of the elastic stress wave though the structures.
KeywordDebris flows Impact pressure Dynamical responses Mechanical impedance
DOI10.1007/s11629-018-5114-z
Indexed BySCI
WOS KeywordJIANGJIA RAVINE ; PARTICLE-SIZE ; FORCE
Language英语
Quartile4区
Funding ProjectNational Natural Science Foundation of China[41771045]
TOP
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000453393800013
Funding OrganizationNational Natural Science Foundation of China
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24740
Collection山地灾害与地表过程重点实验室
Corresponding AuthorHu, Kai-heng
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China;
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Tang, Jin-bo,Hu, Kai-heng. A debris-flow impact pressure model combining material characteristics and flow dynamic parameters[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(12):2721-2729.
APA Tang, Jin-bo,&Hu, Kai-heng.(2018).A debris-flow impact pressure model combining material characteristics and flow dynamic parameters.JOURNAL OF MOUNTAIN SCIENCE,15(12),2721-2729.
MLA Tang, Jin-bo,et al."A debris-flow impact pressure model combining material characteristics and flow dynamic parameters".JOURNAL OF MOUNTAIN SCIENCE 15.12(2018):2721-2729.
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