摘要
长江经济带快速发展对长江下游航道尺度提出更高要求,探明该段航道自然禀赋条件下的最大稳定航深对航道规划和开发潜力研究具有重要意义。考虑到长江下游湖口—南京河段多为分汊河道的河势特征,基于稳定航深估算法提出汊道稳定航深计算方法。计算了典型碍航汊道最大稳定航深,得到了各河段汊道稳定航深与分流比的关系。结果表明:4个典型碍航汊道自然禀赋条件下的最大稳定航深分别为11.2 m(马当南水道右槽)、9.6 m(东流西港)、12.0 m(贵池中港)、15.7 m(江心洲主汊)。
The rapid development of the Yangtze River Economic Belt has put forward higher requirements on the channel dimensions of the lower Yangtze River. Ascertaining the maximum stable channel depth of this reach under natural endowment is thus of great practical significance for channel planning and development potential research. Considering that the Hukou-Nanjing reach of the lower Yangtze River largely consists of braided reaches in terms of river regime characteristics, this paper proposes a calculation method for the stable channel depths of the branches on the basis of stable channel depth estimation. It then calculates the maximum stable channel depths of several typical navigation-obstructing branches and obtains a relation between the maximum stable channel depth and the flow diversion ratio of each branch of this reach. The results show that the maximum stable channel depths of the four typical navigation-obstructing branches are respectively 11.2 m(in the right branch of the Madangnan channel),9.6 m(in the Xigang branch of the Dongliu reach),12.0 m(in the Zhonggang branch of the Guichi reach),and 15.7 m(in the main branch of the Jiangxinzhou reach).
作者
李鑫
周正洋
左利钦
孙猛
王洪杨
黄廷杰
LI Xin;ZHOU Zheng-yang;ZUO Li-qin;SUN Meng;WANG Hong-yang;HUANG Ting-jie(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;New Huaishu River Management Division of Jiangsu Province,Huai an 223001,China;Yangtze Institute for Conservation and Development,Nanjing 210029,China;Huaihe River Sea-entering Channel Project Management Division of Jiangsu Province,Huai an 223200,China)
出处
《水运工程》
北大核心
2022年第11期116-121,共6页
Port & Waterway Engineering
基金
国家自然科学基金项目(U2040219)
国家重点研发计划项目(2016YFC0402103)
长江航道科技项目(Hs219003、Qs221001)。
关键词
最大稳定航深
航道
分汊河段
湖口至南京河段
长江下游
maximum stable channel depth
channel
braided reach
Hukou-Nanjing reach
Lower Yangtze River
