Numerical simulation of the Rongcharong paleolandslide river-blocking event: implication for the longevity of the landslide dam
文献类型：期刊论文
| 作者 | Yan, Jianhua1; Chen, Jianping1; Zhou, Fujun2; Li, Yongchao3; Zhang, Yiwei1; Gu, Feifan1; Zhang, Yansong1; Li, Yuchao1; Li, Zhihai1; Bao, Yiding4 |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2022-03-17 |
| 页码 | 18 |
| ISSN号 | 1612-510X |
| 关键词 | Paleolandslide river-blocking event Numerical simulation Topography restoration Distinct element method Landslide dam longevity |
| DOI | 10.1007/s10346-022-01872-0 |
| 英文摘要 | Numerous paleolandslide dams are distributed along the upper reaches of the Jinsha River under the special geological setting of the Tibetan Plateau. A field investigation revealed that the Rongcharong paleoriver-blocking event formed one such dam. Optically stimulated luminescence results show that the paleolandslide occurred in 2.2 +/- 0.1 Ka BP and blocked the Jinsha River for approximately 800 years. The failure mechanism of the paleolandslide is the steeply inclined antidip rock topple under self-gravity. A distinct element method-based numerical landslide model is constructed using the topography restoration method. The parameter sensitivity results show that microparameters have important effects on the peak particle velocity and morphology of landslide dams. The optimal microparameters are determined by adopting back analysis based on the geomorphic parameters of the landslide dam. The numerical simulation results show that the sliding process lasts for 65 s; the corresponding peak velocity and runout distance are 28.2 m/s and 742.5 m, respectively; and the landslide forms a dam 1129 m long, 967 m wide, and 105 m high. The genetic mechanism of the paleolandslide is reflected in the calibration process of the microparameters and load type of the numerical simulation. Finally, the implications of microparameters for the longevity of the landslide dam are presented. |
| WOS关键词 | SE TIBETAN PLATEAU ; UPPER JINSHA RIVER ; DEPOSIT CHARACTERISTICS ; MODEL ; PREDICTION ; PARAMETERS ; MECHANISM ; EVOLUTION ; AVALANCHE ; SICHUAN |
| 资助项目 | National Natural Science Foundation of China[41941017 U1702241] ; National Key Research and Development Program of China[2018YFC1505301] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000770212900003 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105014]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Wang, Qing |
| 作者单位 | 1.Jilin Univ, Coll Construct Engn, Changchun 130026, Peoples R China 2.China Railway First Survey & Design Inst Grp CO L, Xian 710043, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, 9,Block 4,South Renmin Rd, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Jianhua,Chen, Jianping,Zhou, Fujun,et al. Numerical simulation of the Rongcharong paleolandslide river-blocking event: implication for the longevity of the landslide dam[J]. LANDSLIDES,2022:18. |
| APA | Yan, Jianhua.,Chen, Jianping.,Zhou, Fujun.,Li, Yongchao.,Zhang, Yiwei.,...&Wang, Qing.(2022).Numerical simulation of the Rongcharong paleolandslide river-blocking event: implication for the longevity of the landslide dam.LANDSLIDES,18. |
| MLA | Yan, Jianhua,et al."Numerical simulation of the Rongcharong paleolandslide river-blocking event: implication for the longevity of the landslide dam".LANDSLIDES (2022):18. |
入库方式： OAI收割
来源：地质与地球物理研究所
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