Impermeability detection device and detection method for prefabricated parts of fabricated subway station

The invention relates to an anti-permeability detection device and detection method for a prefabricated part of an assembly type subway station, and relates to the technical field of subway prefabricated part detection.The anti-permeability detection device comprises a box body, a placement frame used for supporting a prefabricated part body is arranged in the box body, the box body is slidably connected with a water injection pipe, and the lower end of the water injection pipe is located above the placement frame; the upper end of the water injection pipe extends to the outside of the box body, the prefabricated part bodies are provided with inserting holes used for conducting impermeability testing, when the two prefabricated part bodies are connected in an inserted mode, the two inserting holes form a detection hole, and the detection hole is matched with the water injection pipe. During detection, the splicing position of the prefabricated part is placed on the placing frame, then the water injection pipe