Mechanism of the progressive failure of non-cohesive natural dam slopes
文献类型：期刊论文
| 作者 | Jiang Xiangang1,4; Worman Anders5; Chen Pengshuai4; Huang Qin4; Chen Huayong2,3
|
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 363页码:UNSP 107198 |
| 关键词 | Natural dam Progressive failure Seepage flow Estimation method |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2020.107198 |
| 产权排序 | 4 |
| 通讯作者 | Jiang, Xiangang(41446@sicau.edu.cn) |
| 文献子类 | Article |
| 英文摘要 | Progressive failure, which begins in the downstream slopes of dams, is one of the main failure modes for natural dams in the field. However, this failure mode lacks attention in the scientific literature, especially regarding its formation mechanism. In this paper, flume tests were conducted to simulate the progressive failure of a natural dam. The results show that the progressive failure process is induced by seepage water discharging on the downstream slope, including the erosion of individual soil particles, repeated minor slip failures, upward head-cutting erosion of the dam crest, and finally the collapse of the dam when the processes have evolved sufficiently. This study focuses on analyzing the initiation mechanism of soil particle migration. The influence of seepage and interflow stresses on the incipient erosion of soil particles is analyzed. In addition, the buoyancy of soil particles on the downstream slope surface is not considered in the vertical direction in this paper but in the direction perpendicular to the downstream slope surface. The paper also discusses how to estimate the occurrence of the progressive failure of a natural dam. In the estimation method, the stress of the interfacial flow, the seepage flow stress, and the friction stress of the soil particles are considered when the phreatic line reaches the downstream slope surface. (C) 2020 Elsevier B.V. All rights reserved. |
| 电子版国际标准刊号 | 1872-695X |
| WOS关键词 | LANDSLIDE DAMS ; SEDIMENT ; EROSION |
| 资助项目 | National Natural Science Foundation of China[41807289] ; National Natural Science Foundation of China[41771045] ; Open fund of Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences[KLMHESP-17-05] ; Sichuan province fundamental scientific research[18ZA0374] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000538796700001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Open fund of Key Laboratory of Mountain Hazards and Surface Processes, Chinese Academy of Sciences ; Sichuan province fundamental scientific research |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34902]  |
| 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 | Jiang Xiangang |
| 作者单位 | 1.Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, DuJiangyan, Chengdu 611830, China; 2.Key Laboratory of Mountain Hazards and Earth Surface Process/Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu 610041, China 3.CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100101, China 4.College of Civil Engineering, Sichuan Agricultural University, DuJiangyan, Chengdu 611830, China; 5.The Royal Institute of Technology, Division of River Engineering, 10044 Stockholm, Sweden; |
| 推荐引用方式 GB/T 7714 | Jiang Xiangang,Worman Anders,Chen Pengshuai,et al. Mechanism of the progressive failure of non-cohesive natural dam slopes[J]. GEOMORPHOLOGY,2020,363:UNSP 107198. |
| APA | Jiang Xiangang,Worman Anders,Chen Pengshuai,Huang Qin,&Chen Huayong.(2020).Mechanism of the progressive failure of non-cohesive natural dam slopes.GEOMORPHOLOGY,363,UNSP 107198. |
| MLA | Jiang Xiangang,et al."Mechanism of the progressive failure of non-cohesive natural dam slopes".GEOMORPHOLOGY 363(2020):UNSP 107198. |
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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