| Along with the development of hydraulic and hydroelectric projects, hydraulic and hydroelectric projects is gradual to move toward west. The dam site locates much in the high mountain canyon. the growing number of underground powerhouse, increasing scale, underground powerhouse gradually large or mega trend. Construction of underground powerhouse, Construction of underground powerhouse, confined space operations, processes large cross operation, the construction are large; Construction of underground powerhouse channel, in particular channel to connect major construction project layout whether reasonable, and will have a direct impact on the progress of the construction and construction method.This text put forward starting construction a basic principle of construction of transport links layout, Combine Nuozhadu Hydropower Project layout and design, the spatial structure of underground power house type, topography project area, and capacity requirements of the progress of the comprehensive analysis. From an objective point of view of the practice of using production line balancing principles against Nuozhadu underground cavern construction characteristics, analysis of different methods of construction processes and process time and location of the space and surface, the mechanical capacity constraints and build the mathematical and logical relationship and its construction process simulation; and through underground caverns of the spatial structure analysis, defining the structural relationship.Through the emulation of different construction project in the Nuozhadu hydropower station, optimization of its construction processes, identify external channel layout and the construction of three large chambers reasonable opening time, it can get at certain the machine equipments install strength under the construction process of different project, and put forward homologous construction method and engineering technique measure to provide a reference.
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