Taking a subway section of Changchun Changchun area as the research object, combined with the geological conditions, the construction method for shallow subsurface excavation, precipitation engineering directly affect the metro engineering construction and the safety of the whole project, influence quality.Tube well dewatering is the Changchun subway engineering precipitation is one of the most widely used method.Combined with the engineering example, the tube well dewatering design, construction and monitoring and a series of problems were studied, analyzed the subway engineering hydrogeological conditions, depth of dewatering and drainage conditions, and then estimating the precipitation amount and precipitation well design, obtained suitable Changchun hydrology geologic conditions on precipitation technology parameters,It can provide reference for similar engineering.
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