三峡工程双线五级船闸通航建筑物的总体布置，涉及泥沙淤积碍航、船闸输水系统水力学、高陡边坡处理、主要金属结构及机电设备制造和技术等方面问题都有特殊要求，必须通过充分的科学试验、论证和工程实践，逐步予以解决。

To solve the high-dam navigation issue of the world class Three Gorges Project (TGP) is one of the key technical issues of the TGP. Special requirements exist in the TGP double-lane five-step shiplock in terms of general layout of navigation structures, sedimentation hindering to navigation, hydraulics of the water-conveyance system, high and steep slope treatment, manufacture and technology of main metal structures and mechanical and electric equipment, which have been resolved step by step by scientific tests, verification and engineering practice.