摘要
感潮河道洪水特性受陆海双相复杂动力的共同影响。选取深圳和香港的界河——深圳河,基于实测降雨、流量及水位资料,分析潮动力作用下2018年“0829”典型洪水的变化过程,并与流量量级和洪潮遭遇过程相当的2008年6月洪水进行对比,发现“0829”洪水期间河道中上部水位升高约1.4m,河道防洪压力增大。分析发现河道淤积、河道阻力增大和河口平均潮位抬升是导致“0829”洪水水位壅高的主要原因。
The flood characteristics of tidal river channel are influenced by complicated upper stream and marine dynamics.Based on the measured rainfall,discharge and water stage data selected from the Shenzhen River—the border between Shenzhen and Hong Kong,this paper analyzed the variation process of the typical‘0829’flood in 2018 under the influence of tidal dynamic,and compared it with the flood that had the similar magnitude of discharge and the flood tide encounter process in June 2008.The results show that the water stage increase by about 1.4m in the middle and upper of the river,coming up with high flood control pressure.The channel silt,the increasing channel resistance and the rising water stage at the estuary are the main reasons that lead to the increase of water stage of‘0829’flood.
作者
吴尧
高时友
吴小明
吴门伍
张小琴
WU Yao;GAO Shiyou;WU Xiaoming;WU Menwu;ZHANG Xiaoqin(Pearl River Hydraulic Research Institute,Pearl River Water Resources Commission,Guangzhou 510611,China;Key Laboratory of the Pearl River Estuarine Dynamics and Associated Process Regulation,Ministry of Water Resources,Guangzhou 510611,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China)
出处
《水文》
CSCD
北大核心
2021年第2期75-79,85,共6页
Journal of China Hydrology
基金
国家自然科学基金项目(42006157,51779280)
水利部珠江河口动力学及伴生过程调控重点实验室开放研究基金项目([2018]KJ07)。
关键词
洪水特性
潮动力
综合糙率
河道淤积
flood characteristics
tidal dynamics
comprehensive roughness
channel silt
