Key Technologies of the Hydraulic Structures of the Three Gorges Project

Abstract

To date, the Three Gorges Project is the largest hydro junction in the world. It is the key project for the integrated water resource management and development of the Changjiang River. The technology of the project, with its huge scale and comprehensive benefits, is extremely complicated, and the design difficulty is greater than that of any other hydro project in the world. A series of new design theories and methods have been proposed and applied in the design and research process. Many key technological problems regarding hydraulic structures have been overcome, such as a gravity dam with multi-layer large discharge orifices, a hydropower station of giant generating units, and a giant continual multi-step ship lock with a high water head.

Keywords

• Three Gorges Project
• Large orifice gravity dam
• Penstock on dam downstream surface
• Tailrace tunnel with sloping ceiling
• Stable arch
• Fully lined ship lock