赣江龙头山枢纽一线船闸通航水流条件及改善措施研究

Study on navigation flow conditions and improvement measures at Longtoushan Junction in the Ganjiang River

赣江龙头山枢纽已建1座Ⅲ级船闸,可通航1000 t级船舶。2019年4月船闸试运行后,发现船闸最大通航流量较低,达不到原设计标准,影响船闸的通航安全和船舶过境效率。在资料分析和物理模型试验的基础上,分析现状船闸通航水流条件及存在问题,剖析其不达标原因,首次提出新型的百叶窗式横向透空隔流堤结构,可改善已建一线船闸通航水流条件,有效提升最大通航流量,为已建船闸方案完善、预留二线船闸设计和以后运行管理提供科学依据,也可为已建工程类似问题的解决提供新途径。

The construction of a three-level navigation lock at Longtoushan Junction was completed in April 2019.However,it has been found that the design standard was not met,posing a significant safety risk.This study aims to address this issue by analyzing data and conducting physical model tests to understand the navigation flow conditions and identify the underlying reasons.A novel measure was implemented,resulting in a substantial enhancement of the safe discharge.The optimized scheme not only helps meet the design requirements but also provides valuable technical support for engineering design and operation.Furthermore,the newly implemented measures have the potential to be widely adopted and applied in similar scenarios.