IMHE OpenIR  > 山地灾害与地表过程重点实验室
Numerical analysis of effect of baffle configuration on impact force exerted from rock avalanches
Bi, YuZhang1; Du, YanJun1; He, SiMing2,3,4; Sun, XinPo5; Wang, DongPo6; Li, XinPo2,4; Liang, Heng2,4; Wu, Yong2,4
2018
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume15Issue:5Pages:1029-1043
SubtypeArticle
AbstractIn mountainous areas, channelized rock avalanches swarm downslope leading to large impact forces on building structures in residential areas. Arrays of rock avalanche baffles are usually installed in front of rigid barriers to attenuate the flow energy of rock avalanches. However, previous studies have not sufficiently addressed the mechanisms of interaction between the rock avalanches and baffles. In addition, empirical design approaches such as debris flow (Tang et al., Quat Int 250:63-73, 2012), rockfall (Spang and Rautenstrauch, 1237-1243, 1988), snow avalanches (Favier et al., 14:3-15, 2012), and rock avalanches (Manzella and Labiouse, Landslides 10:23-36, 2013), which are applied in natural geo-disasters mitigation cannot met construction requirements. This study presents details of numerical modeling using the discrete element method (DEM) to investigate the effect of the configuration of baffles (number and spacing of baffle columns and rows) on the impact force that rock avalanches exert on baffles. The numerical modeling is firstly conducted to provide insights into the flow interaction between rock avalanches and an array of baffles. Then, a modeling analysis is made to investigate the change pattern of the impact force with respect to baffle configurations. The results demonstrate that three crucial influencing factors (baffle row numbers, baffle column spacing, and baffle row spacing) have close relationship with energy dissipation of baffles. Interestingly, it is found that capacity of energy dissipation of baffles increases with increasing baffle row numbers and baffle row spacing, while it decreases with increasing baffle column spacing. The results obtained from this study are useful for facilitating design of baffles against rock avalanches.
KeywordRock avalanches Discrete element method Baffles Interaction mechanisms Energy dissipation
DOI10.1007/s10346-018-0979-z
Indexed BySCI
WOS KeywordFLUID-STRUCTURE INTERACTION ; DEBRIS FLOW IMPACT ; WENCHUAN EARTHQUAKE ; ROLLING RESISTANCE ; GRANULAR FLOWS ; ELEMENT METHOD ; BARRIERS ; MODEL ; DEM ; SIMULATION
Language英语
Quartile2区
Funding ProjectNational Natural Science Foundation of China[41790433] ; NSFC-ICIMOD[41661144041] ; Science and Technology Plan Project of Sichuan Province[2016SZ0067] ; Key Research and Development Projects of Sichuan Province[2017SZ0041]
TOP
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000431308800015
Funding OrganizationNational Natural Science Foundation of China ; NSFC-ICIMOD ; Science and Technology Plan Project of Sichuan Province ; Key Research and Development Projects of Sichuan Province
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/21481
Collection山地灾害与地表过程重点实验室
Corresponding AuthorHe, SiMing
Affiliation1.Southeast Univ, Sch Transportat, Inst Geotech Engn, 2 Sipalou Rd, Nanjing 210096, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chinese Acad Sci, IMHE, 9,Block 4,Renminnanlu Rd, Chengdu 610041, Sichuan, Peoples R China
5.Sichuan Univ Sci & Engn, Sch Civil Engn, Zigong 643000, Sichuan, Peoples R China
6.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, 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
Bi, YuZhang,Du, YanJun,He, SiMing,et al. Numerical analysis of effect of baffle configuration on impact force exerted from rock avalanches[J]. LANDSLIDES,2018,15(5):1029-1043.
APA Bi, YuZhang.,Du, YanJun.,He, SiMing.,Sun, XinPo.,Wang, DongPo.,...&Wu, Yong.(2018).Numerical analysis of effect of baffle configuration on impact force exerted from rock avalanches.LANDSLIDES,15(5),1029-1043.
MLA Bi, YuZhang,et al."Numerical analysis of effect of baffle configuration on impact force exerted from rock avalanches".LANDSLIDES 15.5(2018):1029-1043.
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