Role of baffle shape on debris flow impact in step-pool channel: an SPH study
文献类型：期刊论文
| 作者 | Li Shuai; Peng Chong; Wu Wei; Wang Shun; Chen Xiaoqing; Chen Jiangang; Zhou Gordon G. D.; Chitneedi Bhargav K. |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2020 |
| 页码 | DOI: 10.1007/s10346-020-01410-w |
| 关键词 | Debris flow Impact pressure Step-pool systems Baffle configuration Smoothed particle hydrodynamics |
| ISSN号 | 1612-510X |
| DOI | 10.1007/s10346-020-01410-w |
| 产权排序 | 1 |
| 文献子类 | Article;Early Access |
| 英文摘要 | Drainage channels with step-pool system are widely used to control debris flow. The blocking of debris flow often gives rise to local damage at the steps and baffles. Hence, the estimation of impact force of debris flow is crucial for designing step-pool channel. Existing empirical models for impact pressure prediction cannot consider the influence of baffle shape. In this work, a three-dimensional smoothed particle hydrodynamics (SPH) study on the impact behavior of debris flows in step-pool systems is presented, where debris material is modeled using the regularized Bingham model. The SPH method is first checked using the results from two laboratory tests. Then, it is used to investigate the influence of baffle shape and flow density. Numerical results show that the impact pressure at the first baffle highly depends on the baffle shape; however, the largest impact pressure usually occurs at subsequent baffles due to the violent impact induced by jet flows. The peak impact pressure at the first baffle initially grows with increasing flow density; however, it starts to drop as density is beyond a threshold. Based on the numerical results, an empirical relation considering the influence of baffle shape is proposed for better prediction of debris impact pressure. |
| 电子版国际标准刊号 | 1612-5118 |
| 语种 | 英语 |
| WOS记录号 | WOS:000530787400001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34630]  |
| 专题 | 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 |
| 通讯作者 | Wu Wei |
| 推荐引用方式 GB/T 7714 | Li Shuai,Peng Chong,Wu Wei,et al. Role of baffle shape on debris flow impact in step-pool channel: an SPH study[J]. LANDSLIDES,2020:DOI: 10.1007/s10346-020-01410-w. |
| APA | Li Shuai.,Peng Chong.,Wu Wei.,Wang Shun.,Chen Xiaoqing.,...&Chitneedi Bhargav K..(2020).Role of baffle shape on debris flow impact in step-pool channel: an SPH study.LANDSLIDES,DOI: 10.1007/s10346-020-01410-w. |
| MLA | Li Shuai,et al."Role of baffle shape on debris flow impact in step-pool channel: an SPH study".LANDSLIDES (2020):DOI: 10.1007/s10346-020-01410-w. |
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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