In order to discharge sewage and slag efficiently in underground tunnel,a vacuum pneumatic conveying pump system suitable for TBM was developed.The pneumatic conveying system and components are introduced in detail.Negative pressure suction and positive pressure conveying are used to realize pneumatic conveying of sewage,sludge,solid particles,etc.,and fluid conveying without rotating impeller components is realized.The CFD method was used,and Fluent software was used to simulate and analyze the gas ejector structure to obtain the design parameters.The EDEM-Fluent fluid-solid coupling simulation method was used to explore the transportation status of slag and air or water to obtain the usage boundary conditions,which effectively guided the design and application.At the same time,the vacuum pneumatic conveying pump system improves the excavation efficiency of underground tunnels and the civilized construction level of tunnels.
关键词
气力输送/文丘里管喷射器/排污排渣
Key words
pneumatic conveying/venturi tube ejector/sewage and slag discharge
维普
万方数据