Experimental study of entrainment behavior of debris flow over channel inflexion points
文献类型：期刊论文
| 作者 | Hu Kai-heng1,2,3 ; Pu Li1,2,3,4; Wang Xie-kang5
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 13期号:6页码:971-984 |
| 关键词 | Debris flow Entrainment Inflexion points Erosion Impingement angle |
| ISSN号 | 1672-6316 |
| 通讯作者 | HU Kai-heng |
| 英文摘要 | On-spot observation and field reconnaissance of debris flows have revealed that inflexion points in the longitudinal profile of a movable channel may easily become unstable points that significantly affect their entrainment behavior. In this study, small-scale flume performed to investigate experiments were the entrainment characteristics of debris flows over two types of inflexion points, namely, a convex point, which has an upslope gradient that is less than the downslope gradient; and a concave point, which has an upslope gradient that is greater than the downslope gradient. It was observed that when debris flowed over a convex point, the entrainment developed gradually and progressively from the convex point in the downstream direction, and the primary control factors were the slope gradient and friction angle. Conversely, when debris flowed over a concave point, the entrainment was characterized by impacting and impinging erosion rather than traditional hydraulic erosion, and the impingement angle of the flow significantly determined the maximum erosion depth and outflow exit angle. An empirical relationship between the topography change and the control factors was obtained from the experimental data. |
| 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] | RAINFALL-INDUCED LANDSLIDES ; AUGUST 2010 ; EARTHQUAKE ; MOUNTAIN ; CHINA ; COLORADO ; ZHOUQU ; JAPAN ; JETS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000379268300002 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17213]  |
| 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.6 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, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China 4.Univ Chinese Acad Sci, Beijing IO0049, Peoples R China 5.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610063, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu Kai-heng,Pu Li,Wang Xie-kang. Experimental study of entrainment behavior of debris flow over channel inflexion points[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(6):971-984. |
| APA | Hu Kai-heng,Pu Li,&Wang Xie-kang.(2016).Experimental study of entrainment behavior of debris flow over channel inflexion points.JOURNAL OF MOUNTAIN SCIENCE,13(6),971-984. |
| MLA | Hu Kai-heng,et al."Experimental study of entrainment behavior of debris flow over channel inflexion points".JOURNAL OF MOUNTAIN SCIENCE 13.6(2016):971-984. |
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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