Using physical model and numerical simulation techniques,some technical problems were studied systematically,including layout of power station,measures of sediment and floating debris discharging,types of intake,embed...Using physical model and numerical simulation techniques,some technical problems were studied systematically,including layout of power station,measures of sediment and floating debris discharging,types of intake,embedded types of spiral case,layout of underground powerhouse tunnel group and block reinforcement.It was optimal in technique and economy with the arrangement of powerhouse at the dam-toe of both banks +underground powerhouse in the right bank,as well as the intake with a single and small orifice.The sediment and debris problems could be solved with disperse sediment ejection and floating debris discharging holes.With the adoption of techniques for spiral cases such as heat and pressure preservation,cushion layer and combined embedding,the stable operation of generating units can be guaranteed.The arrangement of tailrace tunnel with sloping ceiling was better than that of tailrace surge tank.The technical requirements related to the embedding type of spiral case were proposed.The reinforcement of huge unfavorable blocks was discussed and the new idea for block reinforcement using anti-sliding piles and normal compressive stress of structural plane was put forward.展开更多
In the stability study of the regional structures in the area of the Longyang Gorge Hydroelectrical Power Station, a model of the current stress-deformation field of the area was constructed based on analyses of avail...In the stability study of the regional structures in the area of the Longyang Gorge Hydroelectrical Power Station, a model of the current stress-deformation field of the area was constructed based on analyses of available data of regional surveys and historical earthquakes and field investigations of active faults and ancient earthquakes. This model was examined and verified by physical and mathematical simulation experiments, and quantitative relations and data were obtained.展开更多
In view of its huge installed capacity and very complex transmission system,the design process of China's Three Gorges Hydropower Station had been repeatedly demonstrated for more than ten years.The smooth constru...In view of its huge installed capacity and very complex transmission system,the design process of China's Three Gorges Hydropower Station had been repeatedly demonstrated for more than ten years.The smooth construction,bringing into production and operation show that the planning scheme for Three Gorges power transmission project is successful.In this paper the design course of Three Gorges power transmission system is retrospected;the main planning schemes for Three Gorges power transmission system are reviewed;and the design results in different design stages are summarized.展开更多
文摘Using physical model and numerical simulation techniques,some technical problems were studied systematically,including layout of power station,measures of sediment and floating debris discharging,types of intake,embedded types of spiral case,layout of underground powerhouse tunnel group and block reinforcement.It was optimal in technique and economy with the arrangement of powerhouse at the dam-toe of both banks +underground powerhouse in the right bank,as well as the intake with a single and small orifice.The sediment and debris problems could be solved with disperse sediment ejection and floating debris discharging holes.With the adoption of techniques for spiral cases such as heat and pressure preservation,cushion layer and combined embedding,the stable operation of generating units can be guaranteed.The arrangement of tailrace tunnel with sloping ceiling was better than that of tailrace surge tank.The technical requirements related to the embedding type of spiral case were proposed.The reinforcement of huge unfavorable blocks was discussed and the new idea for block reinforcement using anti-sliding piles and normal compressive stress of structural plane was put forward.
文摘In the stability study of the regional structures in the area of the Longyang Gorge Hydroelectrical Power Station, a model of the current stress-deformation field of the area was constructed based on analyses of available data of regional surveys and historical earthquakes and field investigations of active faults and ancient earthquakes. This model was examined and verified by physical and mathematical simulation experiments, and quantitative relations and data were obtained.
文摘In view of its huge installed capacity and very complex transmission system,the design process of China's Three Gorges Hydropower Station had been repeatedly demonstrated for more than ten years.The smooth construction,bringing into production and operation show that the planning scheme for Three Gorges power transmission project is successful.In this paper the design course of Three Gorges power transmission system is retrospected;the main planning schemes for Three Gorges power transmission system are reviewed;and the design results in different design stages are summarized.
