Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows
文献类型：期刊论文
| 作者 | He, Songtang1,2,3 ; Wang, Daojie1,2; Chang, Shiqiu1,2,3; Fang, Yingchao1,2,3; Lan, Huijuan1,2,3
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| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2018-07-01 |
| 卷号 | 77期号:14页码:13 |
| 关键词 | Debris flows Channel morphology Hydraulic radius Sinuosity index Jiangjia gully |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-018-7721-y |
| 英文摘要 | A series experiments are conducted to investigate the effects of streambed profile on the erosion and deposition of debris flows. It is found that straight channel can increase the run out of debris flows by 10-25%, compared to that of surfaces without channels, and that travel distance was positively correlated with the hydraulic radius of the channel. In addition, the presence of straight channels caused the volume of debris flow deposition to become normally distributed with respect to travel distance. In the case of curved channels, increases in the sinuosity index resulted in significant blockage and obstruction. In the deposition zone, the maximum deposition volume for a channel with a comparatively low sinuosity index (1.05) was <50% of the minimum deposition volume for a straight channel. Furthermore, the channel curvature affected not only the positions of deposition peaks along the travel distance but also the debris flow magnitudes in each unit interval (0.5 m). This study demonstrates the effects of differences in channel morphology on the erosional and depositional processes of gully debris flows. These findings are of significant importance for guiding debris flow risk assessment and for the restoration and reconstruction of downstream regions. |
| 语种 | 英语 |
| WOS记录号 | WOS:000440144200004 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23466]  |
| 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 |
| 通讯作者 | Wang, Daojie |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block4,Renminnanlu Rd, Chengdu 610041, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Songtang,Wang, Daojie,Chang, Shiqiu,et al. Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows[J]. ENVIRONMENTAL EARTH SCIENCES,2018,77(14):13. |
| APA | He, Songtang,Wang, Daojie,Chang, Shiqiu,Fang, Yingchao,&Lan, Huijuan.(2018).Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows.ENVIRONMENTAL EARTH SCIENCES,77(14),13. |
| MLA | He, Songtang,et al."Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows".ENVIRONMENTAL EARTH SCIENCES 77.14(2018):13. |
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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