Initiation and motion of rainfall-induced loose fill slope failure: New insights from the MPM
文献类型：期刊论文
| 作者 | Zhan ZQ1; Zhou C1; Cui YF2; Liu CQ(刘传奇)3 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 346 |
| 关键词 | Landslides Landfills Partial saturation Numerical modelling Slopes |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2025.107909 |
| 英文摘要 | Loose fill slopes are prevalent worldwide, and their failure during rainstorms is frequently documented. While existing studies have primarily focused on the initiation of such failures, the post-failure motion of rainfallinduced loose fill slope failures has rarely been explored. This study addresses this knowledge gap by investigating both the initiation and subsequent motion of rainfall-induced loose fill slope failures. To achieve this goal, a hydro-mechanical coupled MPM model was utilized to back-analyze the catastrophic 1976 Sau Mau Ping landslide in Hong Kong and conduct parametric studies. From an engineering perspective, the contractive behaviour of loose coarse-grained soil, which induces positive excess pore water pressure and leads to Bishop's stress reduction and a drop in strength, is a major factor contributing to this landslide. The entire failure process can be classified into three phases with different failure modes: local slide, global slide, and flow-like slide, closely related to the soil stress path. The computed results closely match the field measurements on various aspects, including the landslide zone, mobilized volume, and runout distance. The parametric studies reveal that the landslide zone, mobilized soil volume, and final runout distance decrease with a lower value of dilation angle and a smaller critical state plastic deviatoric strain. Conversely, in the case of a constant SWRC, there tends to be an overestimation of these parameters. It is therefore important to consider soil contraction and its influence on hydro-mechanical behaviour. |
| 分类号 | 一类 |
| WOS研究方向 | Engineering, Geological ; Geosciences, Multidisciplinary ; Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001416465900001 |
| 资助机构 | The authors would like to thank the Hong Kong Research Grants Council for providing financial support through grants AoE/E-603/18 and 15205721. Chuanqi Liu is supported by the One Hundred Talents Program of the Chinese Academy of Sciences and the National Natural Science Foundation of China (No. 12172368) . |
| 其他责任者 | Zhou, C |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101434]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Hong Kong Polytechnic University; 2.Tsinghua University; 3.Chinese Academy of Sciences Inst Mech |
| 推荐引用方式 GB/T 7714 | Zhan ZQ,Zhou C,Cui YF,et al. Initiation and motion of rainfall-induced loose fill slope failure: New insights from the MPM[J]. ENGINEERING GEOLOGY,2025,346. |
| APA | Zhan ZQ,Zhou C,Cui YF,&刘传奇.(2025).Initiation and motion of rainfall-induced loose fill slope failure: New insights from the MPM.ENGINEERING GEOLOGY,346. |
| MLA | Zhan ZQ,et al."Initiation and motion of rainfall-induced loose fill slope failure: New insights from the MPM".ENGINEERING GEOLOGY 346(2025). |
入库方式： OAI收割
来源：力学研究所
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