INSTALLATION METHOD FOR UNDERGROUND CONTINUOUS WALL, BOX BUCKET USED FOR THE METHOD, AND CONSTRUCTION METHOD FOR WATER SHIELD WALL IN WASTE RECLAIMED GROUND

摘要

PROBLEM TO BE SOLVED: To provide an installation method for underground continuous walls capable of leveling the inner side surfaces of column row type underground continuous walls at the time of installation of the continuous walls and capable of building the underground continuous walls having a sufficient strength even if excavated soil is a waste banking hardly containing good quality silt.;SOLUTION: An underground is preliminarily excavated by using an auger excavator, a bottomed tubular box bucket having a leveled side face at least corresponding to the insides of the underground continuous walls is driven in a preliminary excavated hole so that the leveled side face matches the inner side face of the underground continuous walls, and the box bucket is extracted while mortar or green concrete is being led into the driven box bucket. In this extraction, the led object is discharged from a led object discharge port provided in the bottom part of the box bucket. The led object discharge port comprises a valve opened by the led pressure of the led object or by an operation from the ground.;COPYRIGHT: (C)2003,JPO