Geo-engineered buffer capacity of two-layered absorbing system under the impact of rock avalanches based on Discrete Element Method
文献类型：期刊论文
| 作者 | 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
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
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| 出版日期 | 2016-05-01 |
| 卷号 | 13期号:5页码:917-929 |
| 关键词 | Discrete element method Buffer capacity Dynamic simulation Impact force Two layered absorbing system |
| ISSN号 | 1672-6316 |
| 通讯作者 | HE Si-ming |
| 英文摘要 | Many 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Environmental Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| 关键词[WOS] | NUMERICAL-SIMULATION ; MODEL ; DEM ; FLOWS ; SOIL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000375790800014 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15133]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.5 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 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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