دانلود رایگان مقاله فناوری کلیدی سازه هیدرولیکی پروژه سه دره

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.

5. Conclusions

During the design and construction of the Three Gorges Project, a series of technological challenges and scientific and technological innovations were continually confronted. The engineers insisted on cross-industry collaborative innovation in science and technology, adhered to the original innovation and the secondary innovation, and insisted on technological innovation to solve the actual problems of the engineering construction. The series of technological problems included flood discharge and energy dissipation with a high water head and large discharge, a multi-layer large orifice gravity dam, a giant power station structure, a largescale ship lock with a high water head, and so forth. These problems have been overcome, and a large number of world-leading science and technology innovations have been achieved. Since the implementation of experimental storage at the normal water level of 175 m in 2008, the reservoir has reached the normal level for six consecutive years, from 2010 to 2015. The project fully provides the comprehensive benefits of flood control, power generation, navigation, water supply, and so on, and successfully experienced a maximum inbound peak flow of 7.12 × 104 m3 ·s–1. Since the operation of the hydraulic structures began, the monitoring results show that the monitoring data such as deformation, seepage, stress-strain values, and so forth, are all lower than the design and calculation values, indicating that the structure’s condition is normal and its operation is safe and reliable. The successful practice of the Three Gorges Project greatly improves the overall technological level of water resources and hydropower construction in China. Many innovative technologies developed in the Three Gorges Project have been widely applied to follow-up water resource and hydropower projects around the world; these technologies play an immense role in promoting global water conservancy and the technological progress of the hydropower industry.