CONSTRUCTION MANAGEMENT METHOD OF HIGH PRESSURE INJECTION REPLACEMENT METHOD, AND FILLER DISCHARGE ROD

摘要

PROBLEM TO BE SOLVED: To provide: a construction management method of a high pressure injection replacement method, which manages the discharge speed of a filler for improving the filling performance (quality, dimension, etc.) of the filler; and a filler discharge rod therefor.;SOLUTION: In a construction management method of a high pressure injection replacement method which creates an improvement body by a filler into a ground converted into mud for improving the ground: an upper-limit value and a lower-limit value of a discharge speed at which the filler is discharged from a discharge port 13 are set; a rod 11 has a receiving member 14 provided so as to face the discharge port of an end face 18 of the rod and an opening 16 forming in the circumferential direction of the rod between the end face and the receiving member; the discharge speed of the filler discharged from the opening is adjusted to be within the range between the set upper-limit value and the set lower-limit value by adjusting at least one of a distance L between the end face and the receiving member and a plane dimension B of the discharge port side of the receiving member; and the filler is discharged from the opening at the discharge speed within the range.;COPYRIGHT: (C)2015,JPO&INPIT