Numerical study on the evolution process of a geohazards chain resulting from the Yigong landslide
文献类型：期刊论文
| 作者 | Zhou, Gordon G. D.1,2 ; Roque, Pamela Jessica Cacela1,2; Xie, Yunxu1,2; Song, Dongri1,2; Zou, Qiang1,2; Chen, Huayong1,2
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| 刊名 | LANDSLIDES
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 17期号:11页码:2563-2576 |
| 关键词 | Yigong landslide Geohazard chain Numerical simulation Velocity weakening friction Dam breach |
| ISSN号 | 1612-510X |
| DOI | 10.1007/s10346-020-01448-w |
| 产权排序 | 1 |
| 通讯作者 | Xie, Yunxu(xieyunxu@imde.ac.cn) |
| 英文摘要 | Geohazard chain processes in mountainous areas generally entail a landslide, followed by a dammed lake, a dam breach, and then outburst flooding. These chains have greater destructive power and a larger area of coverage than a single process, of which a representative event is the April 2000 Yigong landslide in Tibet, China. In this study, a two-part, numerical back-analysis of the entire chain process is carried out. Enhanced one-layer Savage-Hutter models, which incorporate a multiscale, empirical friction model (velocity-weakening) and appropriate erosion mechanics, are solved using a non-staggered central differencing scheme. A reasonable reproduction of the geohazard event chain was obtained. Results show that the use of the multiscale friction law is able to reproduce the dynamic process of the landslide with acceptable accuracy. In addition, the variation of soil shear resistance along the dam depth (against the water flow above) during the dam breach is considered in the study, in which the outburst flooding process is better modeled. The numerical results, validated by field measurements, provide reliable assessment and interpretation of the actual event. |
| 电子版国际标准刊号 | 1612-5118 |
| WOS关键词 | DAM-BREAK ; CENTRAL SCHEMES ; EROSION ; FAILURE ; ERODIBILITY ; HYDRAULICS ; SIMULATION ; DISASTER ; SIZE |
| 资助项目 | National Natural Science Foundation of China[41941017] ; National Natural Science Foundation of China[41731283] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC010] ; Sichuan Science and Technology Planning Program[19YYJC0660] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000577549400001 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Sichuan Science and Technology Planning Program |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50583]  |
| 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 | Xie, Yunxu |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Gordon G. D.,Roque, Pamela Jessica Cacela,Xie, Yunxu,et al. Numerical study on the evolution process of a geohazards chain resulting from the Yigong landslide[J]. LANDSLIDES,2020,17(11):2563-2576. |
| APA | Zhou, Gordon G. D.,Roque, Pamela Jessica Cacela,Xie, Yunxu,Song, Dongri,Zou, Qiang,&Chen, Huayong.(2020).Numerical study on the evolution process of a geohazards chain resulting from the Yigong landslide.LANDSLIDES,17(11),2563-2576. |
| MLA | Zhou, Gordon G. D.,et al."Numerical study on the evolution process of a geohazards chain resulting from the Yigong landslide".LANDSLIDES 17.11(2020):2563-2576. |
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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