船舶进出船厢下沉量预测

Prediction of ship squat while ship entering and leaving ship lift chamber

由于升船机承船厢断面系数较小,船舶进出船厢是一个复杂的三维水流与船舶运行耦合的问题,水力学问题十分复杂。需要根据船舶航行下沉量制定合理的船舶吃水控制标准和船舶航行方式,防止船舶发生触底以保障船舶航行及船厢对接安全。首先介绍了船舶进出船厢过程中船舶航行特性,分析船舶下沉量的主要影响因素,概述前人进行的理论分析和公式推导,总结相关经验公式。其次,针对船舶进出船厢这一过程,对比分析了各经验公式的计算结果。最后提出未来船舶进出升船机船厢下沉量研究工作的方向与内容。

Due to the small section coefficient of the ship chamber,the ship entering and leaving the chamber is a complex three-dimensional water flow problem coupling with ship operation,and the hydraulics problem is very complicated.It is necessary to formulate reasonable ship draught control standards and ship navigation methods based on the ship squat to prevent the ship from touching bottom so as to ensure the safety of ship navigation and ship lift docking.Firstly,this paper introduced the navigation characteristics of the ship in and out of the chamber,analyzed the main affecting factors of ship squat,sketched out the theoretical analysis and formula derivation of previous research,and summarized relevant empirical formulas.Secondly,the calculation results of various empirical formulas were compared and analyzed for the process of ship entering and leaving the ship chamber.Finally,the future research direction and content on ship squat of ship lift were put forward.