IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.5
Geo-engineered buffer capacity of two-layered absorbing system under the impact of rock avalanches based on Discrete Element Method
Bi Yu-zhang1,2,3; He Si-ming1,2,3; Li Xin-po1,2; Wu Yong1,2; Xu Qiang4; Ouyang Chao-jun1,2; Su Li-Jun1,2,3; Wang Hao5
Corresponding AuthorHE Si-ming
2016
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume13Issue:5Pages:917-929
SubtypeArticle
AbstractMany rock avalanches were triggered by the Wenchuan earthquake on May 12, 2008 in southwest China. Protection galleries covered with a single soil layer are usually used to protect against rockfall. Since one-layer protection galleries do not have sufficient buffer capacity, a two-layered absorbing system has been designed. This study aims to find whether an expanded poly-styrol (EPS) cushion, which is used in the soil-covered protection galleries for shock absorption, could be positioned under dynamic loadings. The dynamic impacts of the two-layered absorbing system under the conditions of rock avalanches are numerically simulated through a 2D discrete element method. By selecting reasonable parameters, a series of numerical experiments were conducted to find the best combination for the two-layered absorbing system. The values of the EPS layer area as a percentage of the total area were set as 0% (S-1), 22% (S-2), and 70% (S-3). 22% of the area of the EPS layer was found to be a reasonable value, and experiments were conducted to find the best position of the EPS layer in the two-layered absorbing system. The numerical results yield useful conclusions regarding the interaction between the impacting avalanches and the two-layered absorbing system. The soil layer can absorb the shock energy effectively and S-2 (0.4-m thick EPS cushion covered with soil layer) is the most efficient combination, which can reduce the impact force, compared with the other combinations.
KeywordDiscrete Element Method Buffer Capacity Dynamic Simulation Impact Force Two Layered Absorbing System
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-014-3354-0
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordNUMERICAL-SIMULATION ; MODEL ; DEM ; FLOWS ; SOIL
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000375790800014
Funding OrganizationNational Science Foundation of China(41272346 ; National Outstanding Youth Funds(41225011) ; Science & Technology Research Plan of China Railway Eryuan Engineering Group CO. LTD(13164196(13-15)) ; "hundred talents" program of CAS ; 41472293 ; 91430105)
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15133
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.5
山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci & Water Resources Minist, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China
5.Fuzhou Univ, Coll Environm & Resources, Fuzhou 350116, Peoples R China
First 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 Yu-zhang,He Si-ming,Li Xin-po,et al. Geo-engineered buffer capacity of two-layered absorbing system under the impact of rock avalanches based on Discrete Element Method[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(5):917-929.
APA Bi Yu-zhang.,He Si-ming.,Li Xin-po.,Wu Yong.,Xu Qiang.,...&Wang Hao.(2016).Geo-engineered buffer capacity of two-layered absorbing system under the impact of rock avalanches based on Discrete Element Method.JOURNAL OF MOUNTAIN SCIENCE,13(5),917-929.
MLA Bi Yu-zhang,et al."Geo-engineered buffer capacity of two-layered absorbing system under the impact of rock avalanches based on Discrete Element Method".JOURNAL OF MOUNTAIN SCIENCE 13.5(2016):917-929.
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