融江麻石船闸改扩建工程下引航道通航水流条件模型试验

Model experiment of navigable flow conditions of low approach channel for expansion project of Mashi lock in Rongjiang River

针对山区狭窄河段船闸扩建工程通航水流条件问题,结合融江麻石船闸工程,采用1∶100整体水工模型进行试验,研究下游引航道通航水流条件。结果表明,采用透空式隔流堤,并联合优化隔流堤曲率半径,可显著改善引航道水流条件。建议采用隔流堤长度126 m,曲率半径500 m,过流孔高至少4 m,孔宽13 m,孔数量6个。研究成果可为类似工程提供参考。

For the problem of navigable flow condition of an expansion project of a ship lock in narrow reach in mountainous area,we apply a physical model with a scale of 1∶100 for the Mashi lock in Rongjiang River to investigate flow conditions of the low approach channel.The results show that using a guiding wall with bottom ports and optimizing the radius of curvature can improve the corresponding flow conditions significantly. We recommend that the length and radius of curvature of a guiding wall are 126 m and 500 m respectively,six ports and the width and minimum height of every port are13 m and 4 m respectively. The achievement can provide references for the similar projects.