Abstract: The first phase of D3KC2 bid package for No. 3 Line (between Yuhuazhai and International Port) of Xi'an Subway Project involves the construction of three subway stations (Taibai Road South, Jixiang Village and Great Goose Pagoda North) and subways that link these stations. The total length of the subway alignment is 5,695 m. This paper presents the hydrological investigation results for the design and construction of these facilities. The permeability coefficients and their influence radius of soil materials above the groundwater line are measured throughout the pumping and recharging tests. The maximum permeability coefficients are these stations are: 1.48 (m/d), 2.38 (m/d), 6.89 (m/d), respectively. Their influence radius are: 51.00, 141.03 and 90.72 meters, respectively.

Key words: groundwater pumping tests, groundwater recharging tests, permeability coefficient, influence radius