Modeling of breaching parameters for debris flow dams | |
Ruan, He-chun1,2; Chen, Hua-yong1,2; Chen, Xiao-qing1,2; Zhao, Wan-yu1,2; Chen, Jian-gang1,2; Wang, Tao1,2; Jiang, Yao1,2; Wang, Xi-an1,2; Li, Xiang-ning1,2; Li, Xiao1,2 | |
刊名 | JOURNAL OF MOUNTAIN SCIENCE |
2023-10-01 | |
卷号 | 20期号:10页码:2835-2851 |
关键词 | Debris flow dams Overtopping failure Breaching parameters Peak discharge Flume experiment |
ISSN号 | 1672-6316 |
DOI | 10.1007/s11629-023-8052-3 |
英文摘要 | The debris flow dam is a common type of barrier dams, which shows significant differences from other types of barrier dam such as landslide dam, moraine dam in their formation processes, dam body shapes, and internal compositions. The basic breaching parameters such as flood peak discharge are vital indicators of risk assessment. In this study, we elucidated the failure process of the debris flow dam through the flume experiment, and built the calculation equation of the breaching parameters by selecting critical factors. The result shows that the overtopping failure process of the debris flow dam is capable of forming significantly retrogressive scarps, and the failure process experiences three stages, the formation of the retrogressive scarp, the erosion of the retrogressive scarp, and the decline of the retrogressive scarp. Five factors used for establishing the calculation equations for peak discharge (QP), final width (Wb) of the breach, and duration (T) of the debris flow dam failure are dam height (h), reservoir capacity (V), the fine grain content (P0.075) of the soil, the nonuniformity coefficient (Cu) of the soil, and the upper limit grain size (D90) of the soil, respectively. In the three equations, the correlation coefficients between Qp, Wb, T and the five factors were 0.86, 0.70, 0.63, respectively. The equations still need to be modified and verified in actual cases. |
资助项目 | This research was supported by the National Natural Science Foundation of China (Grant Nos. U20A20112, U19A2049), Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019QZKK0904), CAS Light of West China Program.[U20A20112] ; This research was supported by the National Natural Science Foundation of China (Grant Nos. U20A20112, U19A2049), Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019QZKK0904), CAS Light of West China Program.[U19A2049] ; National Natural Science Foundation of China[2019QZKK0904] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; CAS Light of West China Program |
WOS关键词 | LAKE OUTBURST FLOOD ; LANDSLIDE DAM ; PEAK OUTFLOW ; SIMULATION ; FAILURE ; EROSION ; ERODIBILITY ; DISCHARGE ; RIVER ; SOIL |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | SCIENCE PRESS |
WOS记录号 | WOS:001101927300004 |
资助机构 | This research was supported by the National Natural Science Foundation of China (Grant Nos. U20A20112, U19A2049), Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (Grant No. 2019QZKK0904), CAS Light of West China Program. ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; CAS Light of West China Program |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/57814] |
专题 | 中国科学院水利部成都山地灾害与环境研究所 |
通讯作者 | Chen, Hua-yong |
作者单位 | 1.Univ Chinese Acad Sci, Beijing 100000, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Ruan, He-chun,Chen, Hua-yong,Chen, Xiao-qing,et al. Modeling of breaching parameters for debris flow dams[J]. JOURNAL OF MOUNTAIN SCIENCE,2023,20(10):2835-2851. |
APA | Ruan, He-chun.,Chen, Hua-yong.,Chen, Xiao-qing.,Zhao, Wan-yu.,Chen, Jian-gang.,...&Yu, Yun-han.(2023).Modeling of breaching parameters for debris flow dams.JOURNAL OF MOUNTAIN SCIENCE,20(10),2835-2851. |
MLA | Ruan, He-chun,et al."Modeling of breaching parameters for debris flow dams".JOURNAL OF MOUNTAIN SCIENCE 20.10(2023):2835-2851. |
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