Characteristics and mechanism of debris-flow surges at Jiangjia Ravine
文献类型：会议论文
| 作者 | Hu, Kaiheng1,2 ; Hu, Chaolang3; Li, Yong1,2; Peng, Cui1,2
|
| 出版日期 | 2011 |
| 会议日期 | 2011 |
| 会议地点 | Padua |
| 关键词 | Disaster management Engineering aspects Landslide dam Mitigation strategy Occurrence probability Response Secondary disasters Typhoon Morakot |
| DOI | 10.4408/IJEGE.2011-03.B-071 |
| 页码 | 211-217 |
| 英文摘要 | Debris Flows in nature, for example at Jiangjia Ravine, were often observed moving in the form of intermittent surges which is considered as a kind of wave that is termed as roll wave in this paper. Spatial and temporal characteristics of the roll waves at Jiangjia, as well as their separation and superposition were described in details. First-arrived waves were observed to smooth rough bed at the gentle middle reach and produce a residual layer on which a sequent wave can move with steady profile and high velocity. The data measured by the Dongchuan Debris Flow Observation and Research Station shows the waves are not periodic and a kind of supercritical flow which only propagates downstream. Furthermore, it is observed that there are two kinds of wave profile, linear and non-linear, for the same debris-flow surge in Lagrange and Euler reference frames. A power relationship between the depthaveraged velocity and flow-depth of the surges is inferred from the different profile functions in the two frames. Finally, it was proposed that mass exchange between the residual layer and moving wave reduces frictional resistance and keeps the wave high-speed. © 2011 Casa Editrice Universita La Sapienza. |
| 产权排序 | 1 |
| 会议录 | 5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
 |
| 会议录出版者 | American Society of Civil Engineers (ASCE) |
| 语种 | 英语 |
| ISBN号 | 9788895814469 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/24069]  |
| 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 | Hu, Kaiheng |
| 作者单位 | 1.Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, 610041, China; 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China; 3.Department of Mathematics, Sichuan University, Chengdu, 610064, China |
| 推荐引用方式 GB/T 7714 | Hu, Kaiheng,Hu, Chaolang,Li, Yong,et al. Characteristics and mechanism of debris-flow surges at Jiangjia Ravine[C]. 见:. Padua. 2011. |
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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