Experimental study on characteristics of trapping and regulating sediment with an open-type check dam in debris flow hazard mitigation
文献类型：期刊论文
| 作者 | Sun Hao1,2 ; You Yong1; Liu Jin-feng1
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 15期号:9页码:2001-2012 |
| 关键词 | Debris flow Beam dam Flume experiment Trapping and regulating |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-017-4619-1 |
| 产权排序 | 1 |
| 通讯作者 | You Yong |
| 英文摘要 | Beam dams are a highly effective and commonly used open-type check dam in debris-flow hazard mitigation. In this study, dimensional analysis was used to obtain empirical equations for quantitatively determining the sediment-trapping and flow-regulating characteristics of a beam dam. To determine the coefficients of the empirical equations, flume experiments were conducted to simulate the trapping and regulating processes. The flow pattern, trapping, and regulating characteristics were investigated when debris flows passed through a beam dam. Debris-flow bulk density and peak discharge, and sediment-trapping ratios, were measured directly and indirectly. The results showed that three blocking actions occurred, and that blockage-breaking considerably influenced the trapping and regulating performance of the beam dam. The relative opening size and the sediment concentration were the two main factors affecting the performance of the beam dam. The ratio of trapping sediment decreased with relative opening, and increased with sediment concentration as well as reducing ratio of bulk density and reducing ratio of peak discharge. The sediment concentration and relative opening were the leading factors influencing the trapping and regulating sediment of a beam dam, followed by flume gradient. The results showed that the calculated values obtained using empirical equations were in good agreement with the values derived from the experiments, and that the deviation was acceptable. Finally, taking Zechawa Gully as an example, using the empirical equations we designed the opening size of a beam dam aimed to trap sediment and regulate peak discharge of debris flow in the main gully. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23879]  |
| 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, Sichuan, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun Hao,You Yong,Liu Jin-feng. Experimental study on characteristics of trapping and regulating sediment with an open-type check dam in debris flow hazard mitigation[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(9):2001-2012. |
| APA | Sun Hao,You Yong,&Liu Jin-feng.(2018).Experimental study on characteristics of trapping and regulating sediment with an open-type check dam in debris flow hazard mitigation.JOURNAL OF MOUNTAIN SCIENCE,15(9),2001-2012. |
| MLA | Sun Hao,et al."Experimental study on characteristics of trapping and regulating sediment with an open-type check dam in debris flow hazard mitigation".JOURNAL OF MOUNTAIN SCIENCE 15.9(2018):2001-2012. |
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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