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摘要

PROBLEM TO BE SOLVED: To provide a ground improvement method and a ground improvement device which can effectively discharge excess muddy water easily and at low cost.;SOLUTION: The ground improvement method comprises the first process of arranging a mud-discharge pipe 10 in the ground G to penetrate an improvement area A of which the ground is to be improved, the second process of connecting a supply pipe 30 used for supplying a conditioning material C to the improvement area A to one end of the mud-discharge pipe 10 and the third process of spraying the conditioning material C at high pressure onto the improvement area A through the medium of the supply pipe 30 while drawing the supply pipe 30 into the ground G by drawing the mud-discharge pipe 10 from the other end. The excess muddy water generated with the high-pressure spraying of the conditioning material C is taken into the mud-discharge pipe 10, and is discharged from the other end of the mud-discharge pipe 10. The ground improvement device using the above method is also disclosed.;COPYRIGHT: (C)2008,JPO&INPIT