三峡工程永久船闸是控制三峡水利枢纽工程2003年第一批机组发电的关键性项目,是世界上规模最大、水头最高的双线五级船闸,是在山体中开挖成一条长6442米,最大深度176米的“人工运河”。永久船闸地质状况复杂,科技含量高,施工难度大,没有工程实例和现成的经验可供借鉴,有些属国 The permanent ship lock of the Three Gorges Project is the key project to control the first generation of generating units in the Three Gorges Project in 2003. It is the largest double-line five-stage ship lock in the world with a maximum length of 6442 meters and a maximum length of 6442 meters. Depth of 176 meters “artificial canal ”. Permanent shiplock complex geological conditions, high technology content, construction difficulty, there is no engineering examples and ready-made experience for reference, some countries