GROUND REINFORCEMENT METHOD AND INJECTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a technology capable of maintaining a quality equivalent to that of a two-component type including a leakage preventing property and of achieving workability equivalent to that of conventional one-component type.SOLUTION: After an AGF steel pipe 21 is installed in a ground, a partition wall 22 and filling pipes 23a, 23b are placed in the AGF steel pipe 21. Unheated cement slurry is injected in a region A through the filling pipe 23a, while a heated cement slurry is injected in a region B through the filling pipe 23b. The cement slurry penetrates into the ground through small holes on the AGF steel pipe 21. The unheated cement slurry injected into the region A has long gel time and forms a wide range of consolidated area. The heated cement slurry injected into the region B has short gel time and forms a consolidated area while preventing leakage on a mouth side. A mixer makes one-component cement slurry.