PROBLEM TO BE SOLVED: To provide a mouth caulking device of a pipe capable of suitably injecting a grout into a bedrock in the mouth caulking device of the steel pipe preventing the grout from being leaked from the inside of the steel pipe when the grout is injected from the steel pipe into the bedrock to reinforce the bedrock by placing the steel pipe having injection holes in the circumferential wall in the bedrock from the inside of a tunnel.;SOLUTION: The mouth caulking device of the pipe is equipped with the first bag packer 3 separating the front end space 1a of the steel pipe 1 from a space other than that, a permanent injection pipe 5 supplying the grout in the front end space 1a, the first bag packer injection pipe 3a supplying the first foam chemical fluid to the first bag packer 3, the second bag packer 4 provided to the inside of the steel pipe 1 by separating to the direction of the mouth of the steel pipe 1 from the first bag packer 3 and forming a caulking space 1b between the first bag packer 3 and the second bag packer, the second bag packer injection pipe 4a supplying the second foam chemical fluid to the second bag packer 4 and a caulking injection pipe 6 supplying a silica resin form chemical fluid to the caulking space 1b.;COPYRIGHT: (C)2006,JPO&NCIPI
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