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Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis
Bi, YuZhang1; He, SiMing2,3,4; Du, YanJun1; Sun, XinPo5; Li, XinPo2,4
Corresponding AuthorBi, YuZhang(biyuzhang@seu.edu.cn)
2019-06-01
Source PublicationBULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
ISSN1435-9529
Volume78Issue:4Pages:2267-2282
AbstractRock avalanches with a high mobility and kinetic energy pose a potential geological risk to surrounding buildings. Baffles and avalanche walls are effective ways to protect these buildings. However, the primary focus of previous studies has been on baffles or avalanche walls alone, and there have been very few studies investigating the effectiveness of a combination of baffles and avalanche walls as a countermeasure against rock avalanches. In addition, previous studies on lab-scale tests and numerical analyses often did not take the actual topography effects into consideration. In this study we adopted a numerical simulation approach based on an actual project in the town of Zhangmu, Tibet, with the aim to investigate the effect of different configurations of a combined baffle-avalanche wall system on impeding the kinetic energy of rock avalanches. A series of numerical analyses with discrete element methods (DEM) were conducted. First, the effect of three different pile groups on the reduction of the effect of the rock avalanche was studied using the numerical modeling study. Secondly, the influence of the size of the retaining wall on the maximum impact force of the rock avalanche was studied. Finally, a DEM modeling study on the energy dissipation capacity of the baffle-avalanche wall system was conducted. The results demonstrate that an arrangement of different baffle-avalanche wall systems will produce different results in terms of dissipating the energy of rock avalanches: when the wall is long enough to block all rock masses, enhancing baffle density will decrease the maximum impact force exerted on the avalanche wall; however, if the wall is just long enough to protect the target region, reducing baffle density will decrease the maximum impact force exerted on the avalanche wall. The results of this study are significant in terms of providing guidelines for the design of baffle-avalanche wall systems for protection against rock avalanches.
KeywordRock avalanches Baffles Interaction mechanisms Zhangmu Energy dissipation
DOI10.1007/s10064-018-1284-8
Indexed BySCI
WOS KeywordDYNAMIC SIMULATION ; IMPACT ; VALLEY ; RUNOUT ; MOTION ; ALPS
Language英语
Funding ProjectProject of National Science Foundation of China[41472325] ; Project of National Science Foundation of China[41472293] ; Project of National Science Foundation of China[91430105] ; Sichuan Science and Technology Support Program[2016SZ0067]
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000468075000008
Funding OrganizationProject of National Science Foundation of China ; Sichuan Science and Technology Support Program
PublisherSPRINGER HEIDELBERG
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26226
Collection山地灾害与地表过程重点实验室
Corresponding AuthorBi, YuZhang
Affiliation1.Southeast Univ, Inst Geotech Engn, Sch Transportat, 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, Chengdu 610041, Sichuan, Peoples R China
5.Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621000, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Bi, YuZhang,He, SiMing,Du, YanJun,et al. Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2019,78(4):2267-2282.
APA Bi, YuZhang,He, SiMing,Du, YanJun,Sun, XinPo,&Li, XinPo.(2019).Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,78(4),2267-2282.
MLA Bi, YuZhang,et al."Effects of the configuration of a baffle-avalanche wall system on rock avalanches in Tibet Zhangmu: discrete element analysis".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 78.4(2019):2267-2282.
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