太湖流域长江边界水文特性研究  

Hydrological characteristics of the Yangtze River boundary of Taihu Basin

作　　者：唐兵 肖昌虎 黄金凤 范晓志 TANG Bing;XIAO Changhu;HUANG Jinfeng;FAN Xiaozhi(Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430015,Hubei,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430015

出　　处：《水利水电技术（中英文）》2022年第2期52-59,共8页Water Resources and Hydropower Engineering

基　　金：国家重点研发计划课题(2016YFC0401506)。

摘　　要：太湖流域长江边界是长江下游镇江市至上海市的一段河道,全长311.6 km,属感潮河段,是太湖流域平原河网的外边界,深刻影响着太湖流域水资源调配。为明确该河段水文特征,支撑流域水量调度方案,采用一维水动力模拟方法,选取Mike11水动力模型,利用实测水文数据率定和验证,证明了模型模拟精度。基于大通水文站长系列流量,选取了丰、平、枯典型年,并对应到了近年有实测潮位资料的年份,主要计算22个太湖流域河网入长江口门的水位过程,典型年份计算结果显示径流对太湖流域长江边界水位影响更大。同时,选取不同典型年径流与实测潮位组合成不利计算情景,结果显示在入海流量较小、潮汐作用较大的情况下,边界全段潮差较大、高潮位均较高,易发生咸潮入侵;入海流量大、潮汐作用也大的情况下,边界水位抬升明显。The Yangtze River boundary of Taihu Basin is a section of the Yangtze River, which is from Zhenjiang to Shanghai, with a total length of 311.6 km. It is the tidal reach of the Yangtze River and the outer boundary of the plain river network of Taihu Basin, which has a profound impact on the allocation of water resources in the Taihu Basin. In order to clarify the hydrologic characteristics of the reach and support the drainage basin water volume scheduling scheme, one-dimensional hydrodynamic model Mike11 is adopted. The accuracy of model is verified by using the actual hydrological data of Datong station. Using measured tidal level data in recent years, typical cases based on High/Medium/Low Flow Year are studied. The results show that runoff has a greater impact on the water level at the boundary of the Yangtze River in the Taihu Basin. Different typical measured runoff and tidal level are combined to form 3 unfavorable cases. The results show that under the condition of small inflow and large tidal, the boundary has large tidal range and high tide level, which are prone to salty tide invasion. Under the condition of large inflow and tidal level, the boundary water level rises much more significantly.

关 键 词：太湖流域长江边界 感潮河段 径潮作用 年最高潮位 一维水动力模型 

分 类 号：P333[天文地球—水文科学]