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感潮河口闸下软基冲刷模拟与实践

[日期:2003-09-04] 来源:中国水资讯网:  作者:史 斌 [字体: ]
中国水资讯网——水利新闻中心 http://news.cjk3d.net/
感潮河口闸下软基冲刷模拟与实践


史 斌,陆芳春,包中进
(浙江省水利河口研究院, 杭州 310020)

摘要: 浙江省的感潮河口水闸众多,其闸下软基防冲是众人最关心的问题。结合南台头排涝闸工程的水工模型试验和原型的实际运行情况,对闸下口门区流态及冲刷情况进行分析。结果表明:利用起动流速相似准则选择天然沙模拟闸下软基,能较好地反映实际情况;对于因冲刷而易发生河床演变的工程,需通过动床试验来论证。该成果可供类似工程参考。

关 键 词: 感潮河口;软基冲刷;动床冲刷试验;起动流速;输沙平衡


中图分类号:TV149 文献标识码:A



Simulation & Practice on Erosion of Soft Foundationat Sluice Downstream in Tidal Estuary


SHI Bin, LU Fang-chun, BAO Zhong-jin
(Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China) 


Abstract :There are many sluices built in tidal estuary, Zhejiang province, in which an important problem is scour protection for soft foundation of sluice downstream. By the study of hydraulic model test and prototype observation, the results show that to select natural sediment with the similarity law of strarting velocity to simulate the soft foundation of sluice downstream can reflect the practical condition, and that it is necessary to adopt the movable
- bed model for a project, which easy occurs fluival process caused by eroding. This results can be used for reference to analogous engineering. 


Key words: tidal estuary;erodible soft foundation;movable-bed test;starting velocity;sediment balanced transport

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