The invention relates to a water-proof method, concretely relating to a water- proof method for an underground shield tunnel outlet, comprising well circle and lining structure, as well as sealing cord fabric rubber plates between them, and characterized in adopting the following steps of: arranging vertical steel sheets on the well circle; fixing ring water stop tank on the vertical steel sheets; installing rubber plates on the ring water stop tank before shield machine advances; and finally pouring grout between the rubber plates; and its advantages: it adopts multiple rubber plates to compose multiple water-proof circles, the sealing measures are tight and reliable and whether when or after the shield passes through the well circle, the flapper can always contact with outer diameter of the shield or lining, and the water-proof effect is good and the construction process is fast. |