摘要
钱塘江河口由于下游围涂缩窄,在遭遇连续枯水年时发生淤积,且淤积部位较以往下移。应用一维动床数值模型,验证了尖山围涂前后2次洪水过程,在此基础上,设计了3种典型地形,计算分析了淤积下移对钱塘江河口杭州段洪水位的影响。结果表明,河口淤积下移后,在不利江道条件下,闸口、七堡洪水位分别抬高了0.18 m和0.24 m。
Due to downstream reclamation, deposition happened in successive dry years is more serious in Qiantang estuary, and its location moves downstream. After verified by two floods process before and after Jianshan reclamation, a 1D mobile bed numerical model was used to analyze the impact of the deposition downstream movement on the flood level at Hangzhou river reach based on three designed underwater topographies. Simulation results showed that water level of Zhakou and Qibao stations, caused by deposition downstream movement and under negative river situation, increased 0.18 m and 0.24 m, respectively.
出处
《浙江水利科技》
2008年第4期14-18,共5页
Zhejiang Hydrotechnics
基金
浙江省属科研院所公益技术攻关项目"钱塘江河口治理开发-水沙运动和河床演变规律研究"(2007f10015)
关键词
洪水位
淤积
一维动床数值模型
钱塘江河口
flood level
deposition
1D mobile bed numerical model
Qiantang River estuary
