| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grouting construction method which enables a part of an outer-pipe ejection port to be closed by increasing a length by means of an expansion/contraction packer, can make an inner-pipe ejection port vertically movable, and enables concurrent grouting by the provision of the three or more expansion/contraction packers. <P>SOLUTION: An inner pipe 5 with the three or more expansion/contraction packers 6 are loosely inserted into an outer pipe 3 which is installed in the ground 1, a fluid is fed into the packer 6 and expanded so that a grouting liquid can be concurrently injected from an inner-pipe ejection port 7, subsequently, the fluid is discharged from the packer 6 so that the packer can be contracted, and after a grouting stage is moved by moving the inner pipe 5, the packer 6 is expanded so that the grouting liquid can be repeatedly and concurrently injected into the ground 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
