Experimental investigation on the longitudinal evolution of landslide dam breaching and outburst floods
文献类型：期刊论文
| 作者 | Zhou, Gordon G. D.1,2 ; Zhou, Mingjun1,2; Shrestha, Mandira Singh3; Song, Dongri1,2; Choi, Clarence E.4,5,6; Cui, Kahlil Fredrick E.1,2; Peng, Ming7; Shi, Zhenming7; Zhu, Xinghua8; Chen, Huayong1,2
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| 刊名 | GEOMORPHOLOGY
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| 出版日期 | 2019-06-01 |
| 卷号 | 334页码:29-43 |
| ISSN号 | 0169-555X |
| 关键词 | Landslide dam Overtopping failure Hydrograph Erosion rate |
| DOI | 10.1016/j.geomorph.2019.02.035 |
| 通讯作者 | Zhou, Mingjun(mjzhou@imde.ac.cn) |
| 英文摘要 | Accurate prediction of the evolution of a landslide darn that is breached due to overtopping failure is necessary to estimate the outflow hydrograph and the resulting inundation. In this study, physical flume tests on the breaching of landslide dams were conducted. A wide grain size distribution with unconsolidated dam material was used. Dam breaching was initiated by cutting a notch across the crest of the darn adjacent to the side wall of the flume. This allowed water to escape from the dam while a steady inflow of water was continuously supplied upstream. The effects of upstream inflow on the timescales and magnitudes of the peak discharges and the time to inflection point were also investigated. Experimental results reveal that the whole hydrodynamic process of dam breaching can be divided into three stages defined by clear inflection points and peak discharge. A new longitudinal evolution model is proposed. This model captures the initial increase of the soil erosion rate (of landslide dam) and its subsequent decrease along the longitudinal direction. In addition, a linear relationship between the soil erosion rate and shear stress (of water flow) was observed and this is similar to that observed in large-scale natural landslide dams. Furthermore, soil erosion resistances (of landslide dam) against water flow above are observed to increase with the concentration of entrained sediments along the flow direction. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | DEBRIS-FLOW ; WENCHUAN EARTHQUAKE ; HYDRAULIC EROSION ; FAILURE ; SIMULATION ; PROPAGATION ; SEDIMENT ; RIVER ; EMBANKMENTS ; ERODIBILITY |
| 资助项目 | National Natural Science Foundation of China[41731283] ; National Natural Science Foundation of China[11672318] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC010] ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000469307200002 |
| 资助机构 | National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program |
| 源URL | [http://ir.imde.ac.cn/handle/131551/26224]  |
| 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 | Zhou, Mingjun |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu, Sichuan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Int Ctr Integrated Mt Dev ICIMOD, Patan, Nepal 4.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Peoples R China 5.HKUST Jockey Club Inst Adv Study, Hong Kong, Peoples R China 6.HKUST Fok Ying Tung Grad Sch, Nansha, Peoples R China 7.Tongji Univ, Dept Geotech Engn, Minist Educ, Key Lab Geotech & Underground Engn, Shanghai, Peoples R China 8.Changan Univ, Coll Geol Engn & Surveying, Key Lab Western China Mineral Resources & Geol En, Xian, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Gordon G. D.,Zhou, Mingjun,Shrestha, Mandira Singh,et al. Experimental investigation on the longitudinal evolution of landslide dam breaching and outburst floods[J]. GEOMORPHOLOGY,2019,334:29-43. |
| APA | Zhou, Gordon G. D..,Zhou, Mingjun.,Shrestha, Mandira Singh.,Song, Dongri.,Choi, Clarence E..,...&Chen, Huayong.(2019).Experimental investigation on the longitudinal evolution of landslide dam breaching and outburst floods.GEOMORPHOLOGY,334,29-43. |
| MLA | Zhou, Gordon G. D.,et al."Experimental investigation on the longitudinal evolution of landslide dam breaching and outburst floods".GEOMORPHOLOGY 334(2019):29-43. |
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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