| 摘要 |
PURPOSE:To shorten a term of works, by a method wherein excavation is effected as a ground solidifying material is poured in a hole, and after mixture of soil and the solidifying material is discharged to the outside of a hole to excavate a ground to a given depth, the hole is refilled with the mixture. CONSTITUTION:A hole 2 is bored down to a depth I, being deep well enough to prevent collapse of a hole wall 2a, by means of a screw 3 as a given amount of a ground solidifying material 4 is charged in the surface part of a ground 1. When, after the solidifying material 4 is charged in the hole 2, the screw 3 is inserted again to excavate the ground down to depth II, mixture of soil 5 and the solidifying material 4 is discharged to the outside of the hole 2. Thereafter, when, after the solidifying material 4 is charged in the hole 2, the screw 3 is inserted again to excavate the ground down to a depth III, mixture of the soil 5 and the curing material 4 is discharged to the outside of the hole 2. Further, after the screw 3 is reversed in its rotation to refill the hole 2 with the mixture of the soil 5 and the solidifying material 4, the screw 3 is pulled up to form a solidified body. |
