感潮河段整治线宽度确定方法  

Method for determining the width of regulation line in tidal river

作　　者：肖烈兵 阮伟[2] XIAO Lie-bing;RUAN Wei(Shanghai Waterway Engineering Design and Consulting Co. Ltd., Shanghai 200120, China;Zhejiang University, Hangzhou 300058, China)

机构地区：[1]中交上海航道勘察设计研究院有限公司,上海200120 [2]浙江大学,杭州300058

出　　处：《水道港口》2021年第4期492-497,共6页Journal of Waterway and Harbor

基　　金：国家重点研发计划(2018YFB1600403)。

摘　　要：潮汐河口受海洋和径流的共同作用。径流有季节性和年际变化,而潮流有半日和半月潮周期变化,使得感潮河段和河口处的条件比无潮河流复杂得多,从而增加了航道整治的难度。航道整治事关通航安全、水利和生态环境等多个方面,整治线宽度是航道整治工程设计中的重要参数之一,它决定整治河段的断面形态及其尺度,整治线宽度的计算是否合理某种程度上决定了整治工程的成败。现有规范和标准的计算公式大多数是针对受径流作用的内河航道提出的,而考虑潮汐因素的理论方法相对较少。为此,有必要针对潮汐河段的特征,采用最大适合潮汐河段的净输沙能力法,阐述航道整治参数的确定方法,得出适用于感潮河段的整治线宽度计算新方法。运用实例进行验证,发现与工程实际符合良好,证明了该方法的可行性。Tidal estuaries are subject to the combined dynamics of ocean and runoff.Seasonal and annual variations are found for the runoff.While semi-daily and semi-monthly tidal cycles are found at tidal reaches which makes the conditions for estuaries much more complex than those for non-tidal rivers.It is therefore increasingly difficult for implementing waterway regulation projects which are related to navigation safety,water conservancy and ecological environment etc.The width of regulation line is one of the important parameters in the design of waterway regulation projects.Shapes and dimensions of river sections are determined by the width of regulation line.To some extent,whether the calculation results of the width of regulation line are reasonable or not determine the success of regulation project.Most of the formulas of the existing codes and standards are proposed for the inland waterways only influenced by runoff,while relatively few theoretical methods take tidal factors into consideration.Therefore,according to the characteristics of tidal river,it was necessary to use the net sediment transport capacity method suitable for tidal reach in order to define the channel regulation parameters,and obtain a new method for calculating the width of regulation line of tidal river.An example was used to verify the method.The results were found to be in good agreement with engineering practice.The feasibility of the method was proved.

关 键 词：感潮河段 最大净输沙能力法 整治线宽度 

分 类 号：U617[交通运输工程—船舶及航道工程]