长江南京以下12.5 m深水航道工程的技术难点与建设特点分析  

Analysis on features and difficulties during the construction process of deep water navigation channel project in the Yangtze River below Nanjing

作　　者：曹民雄[1,2] 汪路瑶 申霞 应翰海[2,3] 张立辉 CAO Min-xiong;WANG Lu-yao;SHEN Xia;YING Han-hai;ZHANG Li-hui(Nanjing Hydraulic Research Institute,State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing 210029,China;Construction Headquarters of Deep-water Channel of the Yangtze River below Nanjing,Nanjing 210017,China;China Design Group Co.,Ltd.,Nanjing 210014,China;Changjiang Nanjing Waterway Bureau,Nanjing 210011,China)

机构地区：[1]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 [2]长江南京以下深水航道建设工程指挥部,江苏南京210017 [3]中设设计集团股份有限公司,江苏南京210014 [4]长江南京航道局,江苏南京210011

出　　处：《水运工程》2019年第10期1-8,共8页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2016YFC0402107);三峡后续工作项目(12610100000018J129-06);国家自然科学基金资助项目(51579216,51609151)

摘　　要：为顺利推进国家重点水运工程“长江南京以下12.5m深水航道工程”的建设,需要分析工程的技术难点与建设特点,为工程航道整治设计与施工提供技术支撑。在工程河段的水沙运动特征及碍航特性分析的基础上,结合潮汐分汊河段复杂的自然环境与保护要求,剖析了工程设计面临的技术难点:潮汐分汊河段水沙运动和滩槽演变规律的进一步把握、航道整治参数的确定、通航汊道选择及洲滩控制工程布置、利益相关方相互制约,以及新型航道整治建筑物结构的研发等;分析了工程建设的主要特点:工程里程长、施工点多面广、工程量大、施工强度高带来的管理难度大,施工与通航的矛盾突出,水下恶劣条件下施工精度控制与质量检测难度大,生态环境保护要求高等。成果为工程建设的技术攻关和管理创新提供指导,可作为类似工程前期论证、立项管理的技术参考。In order to smoothly promote the construction of the national key waterway project,the 12.5 m deepwater waterway project in the Yangtze River below Nanjing,technical difficulties and construction characteristics of the project need to be analyzed to provide technical support for the design and construction of the project waterway regulation.Based on the analyses of the characteristics of water-sediment movement and navigation obstacle in the engineering reach,combined with the complex natural environment and protection demand of this tidal and bifurcated reach,the technical difficulties faced by the engineering design were analyzed deeply as follows:further understanding of water-sediment movement and shoal-channel evolution rules of the tidal and bifurcated river,determination of channel regulation parameters,channel inlet choosing and shoal controlling engineering layout,restrictions of the stakeholder,and advanced structure of regulating structures developing.The main characteristics of engineering construction were analyzed:long mileage,wide construction points,large quantity and high construction intensity bring about great difficulty in management,prominent contradiction between construction and navigation,difficulty in construction accuracy control and quality detection under harsh water conditions,and high requirements for ecological environment protection.The achievements has been conducted to provide instructions for the technical breakthrough and managing innovation regarding to this project,as well as the technical references for the feasibility demonstration and establishment management of similar projects.

关 键 词：长江下游 航道工程 建设特点 技术难点 

分 类 号：U617.9[交通运输工程—船舶及航道工程]