Mechanism of Downcutting Erosion of Debris Flow over a Movable Bed
文献类型:期刊论文
作者 | Pan Hua-li1![]() ![]() |
刊名 | JOURNAL OF MOUNTAIN SCIENCE
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出版日期 | 2015 |
卷号 | 12期号:1页码:243-250 |
关键词 | Debris flow Down cutting erosion Infinite slope theory Critical conditions Flume experiments |
ISSN号 | 1672-6316 |
通讯作者 | Ou Guo-qiang |
英文摘要 | The phenomenon of debris flow is intermediate between mass movement and solid transport. Flows can be sudden, severe and destructive. Understanding debris flow erosion processes is the key to providing geomorphic explanations, but progress has been limited because the physical-mechanical properties, movement laws and erosion characteristics are different from those of sediment-laden flow. Using infinite slope theory, this research examines the process and mechanism of downcutting erosion over a moveable bed in a viscous debris flow gully. It focuses specifically on the scour depth and the critical slope for viscous debris flow, and formulas for both calculations are presented. Both scour depth and the critical conditions of downcutting erosion are related to debris flow properties (sand volume concentration and flow depth) and gully properties (longitudinal slope, viscous and internal friction angle of gully materials, and coefficient of kinetic friction). In addition, a series of flume experiments was carried out to characterize the scouring process of debris flows with different properties. The calculated values agreed well with the experimental data. These theoretical formulas are reasonable, and using infinite slope theory to analyze down cutting erosion from viscous debris flow is feasible. |
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] | GULLY EROSION ; CHANNELS ; SILLS |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000348918000020 |
公开日期 | 2015-01-16 |
源URL | [http://ir.imde.ac.cn/handle/131551/7706] ![]() |
专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.1 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.Yunnan Univ, Asian Int Rivers Ctr, Kunming 650091, Peoples R China |
推荐引用方式 GB/T 7714 | Pan Hua-li,Huang Jiang-cheng,Ou Guo-qiang. Mechanism of Downcutting Erosion of Debris Flow over a Movable Bed[J]. JOURNAL OF MOUNTAIN SCIENCE,2015,12(1):243-250. |
APA | Pan Hua-li,Huang Jiang-cheng,&Ou Guo-qiang.(2015).Mechanism of Downcutting Erosion of Debris Flow over a Movable Bed.JOURNAL OF MOUNTAIN SCIENCE,12(1),243-250. |
MLA | Pan Hua-li,et al."Mechanism of Downcutting Erosion of Debris Flow over a Movable Bed".JOURNAL OF MOUNTAIN SCIENCE 12.1(2015):243-250. |
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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