Threshold criterion for debris flow initiation in seasonal gullies
文献类型：期刊论文
| 作者 | Wang, Yang1,4 ; Cui, Peng1,3; Wang, Zhaoyin2; Liang, Shuangqing1,4
|
| 刊名 | INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 32期号:2页码:231-239 |
| 关键词 | Grain Composition Seasonal Gully Non-uniform Sediment Debris Flow Initiation Critical Gradient Critical Discharge |
| ISSN号 | 1001-6279 |
| DOI | 10.1016/j.ijsrc.2017.03.003 |
| 通讯作者 | Wang, Yang |
| 英文摘要 | A series of flume experiments were done to investigate the effect of grain composition on the critical gradient and discharge of debris flows initiated in seasonal gullies. The results indicated that the critical gradient and discharge for debris flow initiation decrease initially, and then increase as the mass content of fine particles (< 2 mm) increases. As the mass content of fine particles increases, the angle of repose, permeability of widely graded gravel soils, and the incipient motion conditions of the coarse grains in non-uniform sediments decrease at first, and then increase. The mass content of fine particles of all inflection points is the same. The theoretical model based on the combination of hydrodynamic force and shear stress is more applicable to the prediction of the critical gradient for debris flow initiation. The critical discharge model considering the effect of non-homogeneity of the soil and the size of coarse and fine grains provides a more accurate prediction of debris flow initiation than other models based on the mean diameter. (C) 2017 International Research and Training Centre on Erosion and Sedimentation/the World Association for Sedimentation and Erosion Research. Published by Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000405496300010 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/18882]  |
| 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 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yang,Cui, Peng,Wang, Zhaoyin,et al. Threshold criterion for debris flow initiation in seasonal gullies[J]. INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,2017,32(2):231-239. |
| APA | Wang, Yang,Cui, Peng,Wang, Zhaoyin,&Liang, Shuangqing.(2017).Threshold criterion for debris flow initiation in seasonal gullies.INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH,32(2),231-239. |
| MLA | Wang, Yang,et al."Threshold criterion for debris flow initiation in seasonal gullies".INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH 32.2(2017):231-239. |
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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