The influence of upstream slope on the local scour at drop structure
文献类型：期刊论文
| 作者 | CHENJen-yan; HSUHsi-hsin; HONGYao-ming |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2016-12 |
| 卷号 | 13期号:12页码:2237-2248 |
| 关键词 | Drop structure Jet flow Scour hole Local scour Steep channel |
| ISSN号 | 1672-6316 |
| 通讯作者 | HONGYao-ming |
| 英文摘要 | The drop structure will fail as a result of local scoring downstream. This paper discusses the influence of a drop structures' upstream slope to local scour. Empirical equations of the scour hole were developed by laboratory experiment, theoretical assumptions, and regression analysis. These equations include the maximum scour depth and length during the scouring period, the maximum equilibrium scour depth and length, and the unit width scour rate. The four channel slopes (0%, 2%, 4%, and 6%) before the drop structure has been included in the analysis. A series of laboratory experiments were conducted to obtain 48 groups of experiments and 419 scour hole profiles during the scouring period. The material used in the scour section is uniform non-cohesive and with a median diameter of d50 = 0.5 mm. The results have been used to develop empirical equations via regression analysis to determine the coefficients of theoretical equations. The high correlation coefficient indicates that the equations developed in this study are suitable for verifying the characteristics of a scour hole at drop structure in the sloped channel. The semi-empirical equation is more accurate than the empirical equation. Compared to a horizontal channel, a sloped channel tends to cause a greater equilibrium maximum scour length, shorter equilibrium maximum scour depth, and faster unit-wide scour rate. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17834]  |
| 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.12 |
| 推荐引用方式 GB/T 7714 | CHENJen-yan,HSUHsi-hsin,HONGYao-ming. The influence of upstream slope on the local scour at drop structure[J]. Journal of Mountain Science,2016,13(12):2237-2248. |
| APA | CHENJen-yan,HSUHsi-hsin,&HONGYao-ming.(2016).The influence of upstream slope on the local scour at drop structure.Journal of Mountain Science,13(12),2237-2248. |
| MLA | CHENJen-yan,et al."The influence of upstream slope on the local scour at drop structure".Journal of Mountain Science 13.12(2016):2237-2248. |
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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