Underground engineering dewatering well plugging device

The utility model discloses an underground engineering dewatering well plugging device which comprises a bottom plate passing sleeve, a steel door plate and a rubber sealing ring plate, the bottom plate passing sleeve is arranged in a dewatering well, the bottom of the bottom plate passing sleeve makes contact with a soil layer, the top of the bottom plate passing sleeve makes contact with a structural bottom plate, and the top of the bottom plate passing sleeve is lower than the upper end face of the structural bottom plate. And the steel door plate is hermetically connected with the top of the bottom-passing plate sleeve through a rubber sealing ring plate. According to the utility model, the water stop device is embedded in the bottom plate, so that the problem of peripheral water seepage of a descending well under the unblocked condition during construction is effectively solved, and a pre-water-stop effect is achieved. Therefore, the difficulty in plugging the underground engineering dewatering well is e