Vertical shaft water sealing device and water jacking method reach for underwater propulsion method

摘要

PURPOSE:To simply, efficiently, and safely carry out the jacking process to lead in particular the front end of a row of pipes to a vertical shaft, in the installation of a row of pipes in water by use of a jacking method. CONSTITUTION:In a water sealing device of a vertical shaft 10, insertion holes 38,... through which a pipe 20 can be slid to insert are provided on the partitions 34-37 of a plurality of compartments S1-S4 provided with a drain means 50 and a sliding plug body 40 is slid to insert into whole insertion holes 38,... of respective partitions 34-37. At the time when the front end of the row of pipes has reached the vertical shaft 10, the side wall 32 at the reached pipe is opened and the front end thereof is pressed on the endface of the sliding plug body 40 to force the pipes 20 and the sliding plug body 40 to slide through the insertion holes 38,... and feed the pipes 20 into the vertical shaft 10 by a specified length.