洪江枢纽船闸扩建工程改造方案研究*

针对高水头船闸利用部分原水工结构进行改建的技术难题，以沅水洪江船闸为例，采取模型试验、枢纽大坝安全综合评估、船闸总体布置优化、老船闸加固改造和输水系统改造等技术创新措施，尽量避免对枢纽发电、大坝安全及防洪安全带来不利影响，从引航道布置、通航条件、导流建筑物和原船闸结构影响等方面对3个改造方案进行对比研究，确定船闸扩建改造推荐方案，可为类似项目提供参考和借鉴。

Renovation plan for expansion project of Hongjiang hub ship lock

In response to the technical difficulties in the renovation of high-head ship locks using part of the original hydraulic structure,taking Hongjiang ship lock in Yuanshui River as an example,innovative measures such as model testing,comprehensive safety evaluation of the hub dam,optimization of the overall layout of the lock,reinforcement and renovation of old ship locks,and renovation of water conveyance systems are adopted to minimize adverse effects on hub power generation,dam safety,and flood control safety.This paper studies the three renovation schemes from the aspects of approach channel layout,navigation conditions,diversion buildings and the influence of the original lock structure,and determines the recommended scheme of lock expansion and renovation,which can provide reference for similar projects.