Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate
ABSTRACT A large‐scale experimental model of instantaneous dike‐break induced flow was conducted in this work. Water level variations in the river channel and floodplain, breach discharge, and the surface velocity field at the breach were measured during dike failure. The results show that: (i) The...
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Wiley
2025-03-01
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| Series: | Journal of Flood Risk Management |
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| Online Access: | https://doi.org/10.1111/jfr3.70017 |
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| author | Dawei Zhang Zhongxiang Wang Huiwen Liu Wuxia Bi |
| author_facet | Dawei Zhang Zhongxiang Wang Huiwen Liu Wuxia Bi |
| author_sort | Dawei Zhang |
| collection | DOAJ |
| description | ABSTRACT A large‐scale experimental model of instantaneous dike‐break induced flow was conducted in this work. Water level variations in the river channel and floodplain, breach discharge, and the surface velocity field at the breach were measured during dike failure. The results show that: (i) The water level in the river rapidly decreased to a minimum (15%–22% of the initial water depth), then began to gradually rise, and finally approached stable. The water level in the floodplain gradually increased and ultimately tended towards stability. (ii) The breach discharge initially increased to a peak, then gradually decreased with a decreasing rate. The peak discharge was not only related to the initial river water level before dike‐break, but also to the river velocity. Under the same conditions, the higher the river water level or the higher the river velocity, the greater the flood peak at the breach. And (iii) During the process of dike‐break, the surface velocity of the breach flow gradually decreased. Other things being equal, a higher river water depth or a higher river velocity led to a larger surface velocity of the breach flow. These findings help better understand the hydrodynamic process and provide data support for models. |
| format | Article |
| id | doaj-art-ad18ae4600f64e1cbe6f2165f3fb3acc |
| institution | OA Journals |
| issn | 1753-318X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Flood Risk Management |
| spelling | doaj-art-ad18ae4600f64e1cbe6f2165f3fb3acc2025-08-20T02:10:27ZengWileyJournal of Flood Risk Management1753-318X2025-03-01181n/an/a10.1111/jfr3.70017Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side GateDawei Zhang0Zhongxiang Wang1Huiwen Liu2Wuxia Bi3China Institute of Water Resources and Hydropower Research Beijing ChinaChina Institute of Water Resources and Hydropower Research Beijing ChinaChina Institute of Water Resources and Hydropower Research Beijing ChinaChina Institute of Water Resources and Hydropower Research Beijing ChinaABSTRACT A large‐scale experimental model of instantaneous dike‐break induced flow was conducted in this work. Water level variations in the river channel and floodplain, breach discharge, and the surface velocity field at the breach were measured during dike failure. The results show that: (i) The water level in the river rapidly decreased to a minimum (15%–22% of the initial water depth), then began to gradually rise, and finally approached stable. The water level in the floodplain gradually increased and ultimately tended towards stability. (ii) The breach discharge initially increased to a peak, then gradually decreased with a decreasing rate. The peak discharge was not only related to the initial river water level before dike‐break, but also to the river velocity. Under the same conditions, the higher the river water level or the higher the river velocity, the greater the flood peak at the breach. And (iii) During the process of dike‐break, the surface velocity of the breach flow gradually decreased. Other things being equal, a higher river water depth or a higher river velocity led to a larger surface velocity of the breach flow. These findings help better understand the hydrodynamic process and provide data support for models.https://doi.org/10.1111/jfr3.70017dike‐breakexperimental modelflood flowinstantaneoussurface morphologysurface velocity field |
| spellingShingle | Dawei Zhang Zhongxiang Wang Huiwen Liu Wuxia Bi Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate Journal of Flood Risk Management dike‐break experimental model flood flow instantaneous surface morphology surface velocity field |
| title | Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate |
| title_full | Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate |
| title_fullStr | Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate |
| title_full_unstemmed | Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate |
| title_short | Experimental Study of Dike‐Break Induced Flow Generated by Instantaneous Opening of the Side Gate |
| title_sort | experimental study of dike break induced flow generated by instantaneous opening of the side gate |
| topic | dike‐break experimental model flood flow instantaneous surface morphology surface velocity field |
| url | https://doi.org/10.1111/jfr3.70017 |
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