长洲枢纽一、二线船闸通过能力变化及航运潜能释放  

Trend of traffic capability of first and second ship locks of Changzhou hydro-project and release of shipping potential

作　　者：潘荣友 胡颖[2,3] 王勇 马爱兴[2,3] 邓涯 PAN Rong-you;HU Ying;WANG Yong;MA Ai-xing;DENG Ya(Shipping Development Center of the Guangxi Zhuang Autonomous Region,Nanning 530029,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Key Laboratory of Port,Waterway&Sedimentation Engineering Ministry of Communications,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]广西壮族自治区港航发展中心,广西南宁530029 [2]南京水利科学研究院,水文水资源与水利工程科学国家重点实验室,江苏南京210029 [3]南京水利科学研究院,港口航道泥沙工程交通行业重点实验室,江苏南京210029

出　　处：《水运工程》2022年第12期140-145,151,共7页Port & Waterway Engineering

基　　金：中央级公益性科研院所基本科研业务费专项(Y221013、Y222011);交通运输部建设科技项目(2014328345180)。

摘　　要：长洲水利枢纽过闸货运量已跃居世界天然航道首位。然而坝下枯水位持续降落引起一、二线船闸通航保证率大幅下降,制约枢纽的整体通过能力。基于实测水文资料和模型试验成果,分析一、二线船闸通过能力变化。结果表明:枢纽运行以来,水位降落引起一、二线船闸可通航船舶吨级总体呈下降趋势,原设计船型分别为2000、1000吨级,至2019年一、二线船闸在设计流量(外江1090 m^(3)/s)下仅能通过500、100吨级;贵梧3000吨级航道整治工程实施后,西江运行中的国标船型和西江船型得以顺利过闸(一、二线船闸)所需的外江最小下泄流量分别为1875、2470 m^(3)/s。优化上游库群联合调度提升枯季下泄流量,优化不同泄流条件下一、二线船闸的组合调度,深度释放船闸的利用率,是现状全面提升长洲枢纽整体通过能力的重要途径。The cargo volume of Changzhou hydro project has leapt to the first place in the world s natural waterway.However,the descending trend of the low water level downstream the hydro-project causes a sharp decline in the navigation assurance rate of the first and second ship locks,which restricts the overall carrying capacity of the hydro-project.Based on the hydrological data and the results of river physical model test,this paper studies the change of the carrying capacity of the first and second ship locks.The results show that since the operation of the hydro-project,the tonnage of navigable ships of the first and second ship locks generally declines,which the first and second ship locks can only pass through 500 t and 100 t levels respectively by 2019 under the design flow(1090 m^(3)/s in the Waijiang river).After the implementation of the 3000 t level navigation channel regulation project from Guigang to Wuzhou in future,only when the discharge of Waijiang river reaches 1875 m^(3)/s and 2470 m^(3)/s respectively,the national standard ship type and Xijiang ship type can pass the ship locks smoothly(the first and second ship locks).It is an important way to comprehensively improve the overall carrying capacity of Changzhou hydro-project for deeply releasing the utilization rate of the first and second ship locks,by optimizing the joint scheduling of upstream reservoirs to increase the dry season flow and the combined scheduling of the first and second locks under different discharge conditions.

关 键 词：长洲水利枢纽 船闸通过能力 最小下泄流量 非工程措施 航运潜能 

分 类 号：U641[交通运输工程—船舶及航道工程]