Screw thread type freezing pipe through hole water stopping method

The invention discloses a screw thread type freezing pipe through hole water stopping method which comprises the following steps that S1, before a pipe piece through hole is drilled, a protective shell is arranged on a front screw thread of a water stopping device in a sleeving mode, and then freezing pipe drill rod drilling is conducted; a conical head water stop ring is arranged on the water stop device; s2, after the duct piece through hole penetrates through the duct piece on the opposite side and the conical head water stop ring abuts against the duct piece, the protection shell is removed from the front portion of the water stop device; s3, a through hole water stop cover plate is installed on the front portion of the water stop device in a screwed mode, and the through hole water stop cover plate is screwed to abut against the pipe piece; by the adoption of the method, the seams between the freezing pipe in the through hole and the through hole can be blocked on the two sides of the through hole of the