Local scour and the laws of scour pit's shape downstream of debris flow sabo dam
文献类型：期刊论文
| 作者 | Pan Hua-li1 ; Yang Shun2; Ou Guo-qiang1; Huang Jiang-cheng3,4
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 10期号:6页码:1063-1073 |
| 关键词 | Scour pit Debris flow Sabo dam Scouring law Interior slope Flume experiment |
| ISSN号 | 1672-6316 |
| 通讯作者 | Huang Jiang-cheng |
| 英文摘要 | The erosion shape and the law of development of debris flow sabo dam downstream is a weak part in the study on debris flow erosion. The shape and development of scour pit have an important effect on the stability and safety of debris flow sabo dam, which determines the foundational depth of the dam and the design of protective measures downstream. Study on the scouring law of sabo dam downstream can evaluate the erosion range and reasonably arrange auxiliary protective engineering. Therefore, a series of flume experiments are carried out including different debris flow characteristics (density is varying from 1.5 t/m(3) to 2.1 t/m(3)) and different gully longitudinal slopes. The result shows that the scour pit appears as an oval shape in a plane and deep in the middle while superficial at the ends in the longitudinal section, the position of the maximum depth point moves towards downstream with an increase of flume slope angle. The maximum depth of scour pit is mainly affected by the longitudinal slope of gully, density of debris flow, and the characteristics of gully composition (particle size and the viscosity of soil). The result also indicates that the viscosity of soil will weaken the erosion extent. The interior slopes of scour pit are different between the upstream and the downstream, and the downstream slope is smaller than the upper one. For the viscous and non-viscous sands with the same distribution of gradation, the interior slope of non-viscous sand is smaller than the viscous sand. According to the regression analysis on the experimental data, the quantitative relationship between the interior slope of scour pit, slope of repose under water and the longitudinal slope of gully is established and it can be used to calculate the interior slope of scour pit. The results can provide the basis for the parameter design of the debris flow control engineering foundation. |
| 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] | BED SILLS ; SIMULATION ; BEHAVIOR ; EROSION ; JET |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000327459900014 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/8313]  |
| 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.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yunnan Univ, Asian Int Rivers Ctr, Kunming 650091, Peoples R China 4.Yunnan Key Lab Int Rivers & Transboundary Ecol Se, Kunming 650091, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan Hua-li,Yang Shun,Ou Guo-qiang,et al. Local scour and the laws of scour pit's shape downstream of debris flow sabo dam[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(6):1063-1073. |
| APA | Pan Hua-li,Yang Shun,Ou Guo-qiang,&Huang Jiang-cheng.(2013).Local scour and the laws of scour pit's shape downstream of debris flow sabo dam.JOURNAL OF MOUNTAIN SCIENCE,10(6),1063-1073. |
| MLA | Pan Hua-li,et al."Local scour and the laws of scour pit's shape downstream of debris flow sabo dam".JOURNAL OF MOUNTAIN SCIENCE 10.6(2013):1063-1073. |
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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