An improved depth-averaged landslide dam breach model with modified sediment transport and bank collapse algorithms
文献类型：期刊论文
| 作者 | Li, Jiheng2,3; Shen, Wei3,4,5; Huang, Da3,4,5; Xia, Xilin6; Guo, Jian1; Liu, Denghai2,3; Chen, Jianchao2,3; Li, Tonglu2,3; Peng, Jianbing3,4,5 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2026-05-01 |
| 卷号 | 193页码:107963 |
| 关键词 | Landslide dam breach Numerical simulation Depth-averaged model Sediment transport Bank collapse |
| ISSN号 | 0266-352X |
| DOI | 10.1016/j.compgeo.2026.107963 |
| 产权排序 | 5 |
| 文献子类 | Article |
| 英文摘要 | Most landslide dams fail through overtopping, with the failure process controlled by the combined effects of longitudinal erosion and lateral bank collapse. However, existing depth-averaged models still face difficulties in simulating the evolution of longitudinal erosion and lateral collapse, mainly due to the lack of precise physical representations. To address this issue, this study proposes an improved depth-averaged landslide dam breach model that integrates enhanced sediment transport and bank collapse algorithms. A dynamic critical Shields parameter is introduced into the Meyer-Peter-M & uuml;ller sediment transport formula to account for the combined influence of dam slope and material friction strength on sediment initiation. In addition, based on the traditional lateral collapse model, a new algorithm that uses the true three-dimensional slope angle of the terrain is proposed to improve the accuracy of collapse simulation. The governing equations of the improved model are solved using a Godunov-type finite volume scheme, enabling the simulation of both longitudinal erosion and lateral collapse during dam breaching. Validation against a one-dimensional overtopping erosion test, a side-bank collapse verification case with a dry-wet partition, and a sand-dike breach experiment shows that the improved model achieves high agreement with measurements in hydrodynamics, sediment transport, and lateral collapse prediction. The model is further applied to the back-analysis of the Tangjiashan landslide dam breach process, accurately reproducing the complete evolution of the breach from longitudinal incision to deepening and widening, and finally to stable drawdown. The relative errors of peak discharge, breach morphology, and water level variations are all within 10%, with time scale deviations of less than 1 h. The improved model provides a more reliable numerical tool for landslide dam breach risk assessment. |
| URL标识 | 查看原文 |
| WOS关键词 | FAILURE ; FLOW ; SIMULATION ; IMPACT |
| WOS研究方向 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001688487600001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/220903]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Shen, Wei; Huang, Da |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; 2.Stn Chinese Loess Plateau, Water Cycle & Geol Environm Observat & Res, Minist Educ, Zhengning 745399, Gansu, Peoples R China 3.Changan Univ, Dept Geol Engn, Xian 710064, Peoples R China; 4.State Key Lab Loess Sci, Xian 710061, Peoples R China; 5.Acad Yellow River Sci Shaanxi Prov, Xian 710064, Peoples R China; 6.Univ Birmingham, Birmingham B15 2TT, England; |
| 推荐引用方式 GB/T 7714 | Li, Jiheng,Shen, Wei,Huang, Da,et al. An improved depth-averaged landslide dam breach model with modified sediment transport and bank collapse algorithms[J]. COMPUTERS AND GEOTECHNICS,2026,193:107963. |
| APA | Li, Jiheng.,Shen, Wei.,Huang, Da.,Xia, Xilin.,Guo, Jian.,...&Peng, Jianbing.(2026).An improved depth-averaged landslide dam breach model with modified sediment transport and bank collapse algorithms.COMPUTERS AND GEOTECHNICS,193,107963. |
| MLA | Li, Jiheng,et al."An improved depth-averaged landslide dam breach model with modified sediment transport and bank collapse algorithms".COMPUTERS AND GEOTECHNICS 193(2026):107963. |
入库方式： OAI收割
来源：地理科学与资源研究所
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