长江口水沙变化与趋势预测  

Review of hydro-sediment change and tendency in Yangtze estuary

作　　者：窦希萍[1,2] 缴健 储鏖[3] 童朝锋 DOU Xiping;JIAO Jian;CHU Ao;TONG Chaofeng(Nanjing Hydraulic Research Institute, Nanjing 210024, China;Key Laboratory of Port, Waterway and Sedimention Engineering of MOT, Nanjing 210024, China;College of Harbor, Costal and Offshore Engineering, Hohai University, Nanjing 210098, China)

机构地区：[1]南京水利科学研究院,江苏南京210024 [2]港口航道泥沙工程交通行业重点实验室,江苏南京210024 [3]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《海洋工程》2020年第4期2-10,共9页The Ocean Engineering

基　　金：国家重点研发计划资助(2017YFC0405400)。

摘　　要：随着长江流域水土保持、上游水库拦蓄调节、沿江用水增加及气候变化,进入长江口的水沙通量发生改变,入海泥沙量锐减。此外,长江口相继实施了深水航道治理、青草沙水源地、浅滩圈围等大型工程。因此,需要针对长江口水沙变化开展相关研究。对长江口陆相和海相水沙变化规律及趋势、河床容积与泥沙收支变化以及整治工程下分汊河口演变预测等进行了概述,预测了今后10~50年大通站流量、含沙量、输沙量变化以及南北槽的演变趋势,为进一步研究变化条件下的长江口重大工程安全提供基础条件。With the conservation of water and soil in the Yangtze River basin,the adjustment of upstream reservoirs,the increase of water use,and the change of climate,the volume of water and sediment flux into the Yangtze River estuary has changed,therefore the amount of sediment into the sea has decreased sharply.In addition,the Yangtze River estuary has successively undergone large-scale projects such as Deepwater Channel Regulation Project,Qingcaosha Water Source Project,and the reclamation of shoals.Thus,it is necessary to implement relevant researches on the variation of water and sediment in the Yangtze River estuary.This paper summarizes the variation law and trend of landward and seaward water and sediment movement in the Yangtze River estuary,the changes of riverbed volume and sediment budget,and the prediction of the evolution of the bifurcated estuary under the influence of the regulation project.The changes of discharge,sediment concentration,sediment transport and the evolution trend of the south-north passage of Datong station in the next 10-50 years are predicted,which provides basic conditions for further studies of the major projects′safety in the Yangtze estuary.

关 键 词：长江口 水沙变化 重大工程安全 河床容积 整治工程 拦门沙 

分 类 号：P753[交通运输工程—港口、海岸及近海工程] TV148[天文地球—海洋科学]