Progressive hydraulic failure mechanism and multi-stage instability risk early warning for loess check dams
文献类型：期刊论文
| 作者 | Bao, Han1,3; Liu, Li3; Lan, Hengxing5; Peng, Jianbing1,4; Yan, Changgen2,3; Xu, Jiangbo3; Wang, Juntian3; Zhang, Keke3; Wei, Wei3 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 663页码:134226 |
| 关键词 | Loess check dam Progressive hydraulic failure Progressive failure calculation Key factors Instability Early Warning |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2025.134226 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The numerous check dams constructed on the Loess Plateau are facing significant risks of failure, with progressive hydraulic failure being one of the primary modes. This study establishes a theoretical model for progressive hydraulic failure of loess check dams (LCD), based on the Janbu method and upper bound limit analysis method. The model incorporates multiple factors, including pore water pressure, hydraulic gradient, height of the phreatic line, depth of rainfall infiltration, and crest crack, while also considering the geometric structural evolution during the progressive failure process (PFP). Additionally, the modified Morris screening method is employed to assess the influence of various factors on dam stability at different failure stages. The results indicate that hydraulic gradient and pore water pressure are the key factors affecting dam stability, with the optimal monitoring location being the middle-lower part of the dam slope. A simplified theoretical model for progressive hydraulic failure of LCD is established, with key factors (pore water pressure and hydraulic gradient) as monitoring indices, determining the evolution of the dam stability coefficient during progressive failure. Furthermore, considering the time-variability of the dam geometry and hydrological parameters during the PFP, a multi-stage safety factor reduction rate is introduced. Subsequently, a risk level classification method for the progressive hydraulic failure of LCD is proposed, enabling early warning of dam instability at different failure stages. The findings provide theoretical support for ensuring the safety of LCD and mitigating instability risks. |
| URL标识 | 查看原文 |
| WOS关键词 | LANDSLIDE ; STABILITY ; PLATEAU ; SLOPES |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001578946200004 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/217457]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Bao, Han; Liu, Li |
| 作者单位 | 1.State Key Lab Loess Sci, Xian 710064, Shaanxi, Peoples R China; 2.Xian Key Lab Geotech Engn Green & Intelligent Tran, Xian 710064, Shaanxi, Peoples R China 3.Changan Univ, Sch Highway, Xian 710064, Shaanxi, Peoples R China; 4.Changan Univ, Sch Geol Engn & Geomatics, Xian 710064, Shaanxi, Peoples R China; 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Bao, Han,Liu, Li,Lan, Hengxing,et al. Progressive hydraulic failure mechanism and multi-stage instability risk early warning for loess check dams[J]. JOURNAL OF HYDROLOGY,2025,663:134226. |
| APA | Bao, Han.,Liu, Li.,Lan, Hengxing.,Peng, Jianbing.,Yan, Changgen.,...&Wei, Wei.(2025).Progressive hydraulic failure mechanism and multi-stage instability risk early warning for loess check dams.JOURNAL OF HYDROLOGY,663,134226. |
| MLA | Bao, Han,et al."Progressive hydraulic failure mechanism and multi-stage instability risk early warning for loess check dams".JOURNAL OF HYDROLOGY 663(2025):134226. |
入库方式： OAI收割
来源：地理科学与资源研究所
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