富池复线船闸与长江连接段通航条件试验研究

Experiment on navigation conditions at connecting section of Fuchi’s second-line ship lock with the Yangtze River

针对富池复线船闸与长江连接段的通航条件问题,采用平面数值模拟试验和船舶操纵模拟试验方法对多种工况下的水流条件、船舶操纵和航行轨迹进行研究。结合设计方案在通航条件方面存在的不足,从拓宽口门南岸尺度以及下行进闸在小流量下及早下线进闸、大流量下在下游适当位置掉头后顶流进闸两个方面进行优化。结果表明,优化后的方案改善了连接段的通航条件、降低了船舶操纵风险,船舶最大通航流量从5.41万m^(3)/s提高至6.82万m^(3)/s,为工程设计确定了合理的流量参数。

In view of the navigation condition problem at the connecting section of Fuchi’s second-line ship lock with the Yangtze River, we adopt the two-dimensional numerical simulation experiment and the simulation experiment of ship handling to study flow conditions, ship handling, and ship navigation trajectories under multiple working conditions. According to the disadvantages of the design scheme in navigation conditions, we propose two measures for optimization: One is to widen the dimension of the entrance south coast, and the other is the adjustment of navigation trajectories. In other words, under low flow rates, ships heading downward could enter the ship lock as early as possible, and under large flow rates, the ship could turn round in a suitable position downstream to enter the ship lock with counter-flow. The results indicate that the optimized scheme can improve the navigation conditions of the connecting section and reduce the risk of ship handling, and the maximum navigable flow rate is increased from 54 100 m^(3)/s to 68 200 m^(3)/s, which determines the reasonable flow parameters for engineering design.