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Water Science and Engineering 2021年第1期14卷 65-71页

作者： Fei-dong Zheng Ping-yi Wang Jian-feng An Yun Li College of River and Ocean Engineering Chongqing Jiaotong UniversityChongqing 400074China National Engineering Technology Research Center for Inland Waterway Regulation Chongqing 400074China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing 210029China

Ported wall extensions are important hydraulic structures used to reduce crosscurrents in upper approaches to *** effect of such extensions located upstream of a solid guard wall on flow characteristics depends on many factors,including geometric and hydraulic *** this study,the hydraulic performance of ported wall extensions was experimentally investigated in terms of the permeability coefficient,expanding angle,extension length,and flow *** results demonstrate that the dimensionless maximum transverse velocity is closely related to the permeability coefficient,expanding angle,and flow *** contrast,the dimensionless eddy length mainly depends on the permeability coefficient,expanding angle,and extension ***,the optimum permeability coefficient increases with the expanding angle or flow depth,and it is approximately constant for different extension *** results have the potential to provide direct guidance for the design of effective ported wall extensions in upper approaches to locks.

关键词： Ported wall extension Permeability coefficient Transverse velocity Eddy length navigation safety

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Design and implementation of a visual monitoring system to ensure safety in the water surrounding a container vessel

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Journal of Marine Science and Application 2008年第3期7卷 200-204页

作者：金永兴王则胜陈锦标卜平 Merchant Marine College Shanghai Maritime University Zhenjiang Watercraft College of PLA

Container vessels navigate among the world＇s ports, frequently passing through narrow and congested waters. Due to the many layers of containers on a container vessel＇s decks, it is difficult for the crew to be aware of all fishing vessels and other obstacles in a container vessel＇s radar observation blind zone. This greatly increases the risk of collisions and other accidents. Given such great challenges to safe navigation and safety management with container vessels, their security risks are severe. An effective visual monitoring system can improve the safety of the water area surrounding container vessel by eliminating a vessel＇s observation blind zone, providing an effective safety measure for vessels navigating fishing zones and other troublesome areas. The system has other functions, such as accident recording, ship security, and monitoring of loading and unloading operations, thus ensuring the ship operates safely. Six months＇ trial operation showed that the system facilitates safe navigation of container vessels.

关键词： observation blind zone navigation safety ship security visual monitoring system

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