By mixture churning soil improvement construction method and that device

摘要

PROBLEM TO BE SOLVED: To solve trouble, in which agitation with a ground is difficult to uniformly perform because a mixed liquid is discharged in a striped shape in the excavation direction, besides trouble, in which a discharge opening is clogged in the case of excavation and must be cleaned at all times because the mixed liquid is discharged in the excavation direction from the front end of a mixing agitator in mixing and agitation by a liquefied hardening material which has been developed, regarding soft-ground improvement in a shallow stratum and a medium stratum and the foundation land-formation of a structure. ;SOLUTION: An object ground is excavated, ejecting or high-pressure injecting a liquefied hardening material from a liquefied hardening-material injection hole by a mixing fork 1, which has the liquefied hardening-material injection hole 21 on a side wall and in which a liquefied hardening-material ejection rod 2 curved in conformity with fork blades 11 is disposed at the central section of the fork blades, and removed soft-ground soil and the liquefied hardening material are mixed and agitated by operating the fork blades and an improved hardened stratum is land-formed.;COPYRIGHT: (C)2001,JPO