Experimental Studies on Debris Flow with Logs Focusing on Specific Weight Difference of Log Species
文献类型：期刊论文
| 作者 | Haruki WATABE ; Takahiro ITOH ; Kazuhiko KAITSUKA ; Shigeki NISHIMURA |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2013-04 |
| 卷号 | 10期号:2页码:315-325 |
| 关键词 | Debris flow Driftwood Specific weight Log Flume test |
| 通讯作者 | Takahiro ITOH |
| 英文摘要 | There are many experimental approaches, field investigations and numerical calculations for movements of woods in a clear water and debris flow. However, kinematic conditions for accumulated logs and the interactions between a main flow and logs have not been fully evaluated. Mitigations for woods need taking into account the characteristics of tree species such as conifer and broad-leaf trees and of shapes such as root swells and crown. In the present study, we focus on the differences in specific weight of conifer and broad-leaf trees with some moisture in a sediment-water mixture flow with narrow flow width, and consider that conifer and broad-leaf tree are floating and submerged solid phase, respectively. Flume tests are conducted in steady flow of clear and debris flow over a rigid bed in order to evaluate conifer and broad-leaf tree movement in clear water and debris flow. Experimental data indicates that dimensionless transverse diffusion coefficient can be 0.1 to 0.4 and 0.3 to 0.9 in flow direction. Those diffusive characteristics seem to be independent of Reynolds number and Froude number, but dependent of bed slope, i.e., gravity, though detailed considerations are needed to discuss about flow characteristics such as spatial eddy structures, momentum transfer induced by interactions of logs and so on. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-04-26 |
| 源URL | [http://192.168.143.20:8080/handle/131551/5221]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2013_Vol10 No.2 |
| 推荐引用方式 GB/T 7714 | Haruki WATABE,Takahiro ITOH,Kazuhiko KAITSUKA,et al. Experimental Studies on Debris Flow with Logs Focusing on Specific Weight Difference of Log Species[J]. Journal of Mountain Science,2013,10(2):315-325. |
| APA | Haruki WATABE,Takahiro ITOH,Kazuhiko KAITSUKA,&Shigeki NISHIMURA.(2013).Experimental Studies on Debris Flow with Logs Focusing on Specific Weight Difference of Log Species.Journal of Mountain Science,10(2),315-325. |
| MLA | Haruki WATABE,et al."Experimental Studies on Debris Flow with Logs Focusing on Specific Weight Difference of Log Species".Journal of Mountain Science 10.2(2013):315-325. |
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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