| 摘要 |
PROBLEM TO BE SOLVED: To provide a creating method for a solidified body that can prevent the solidified body from decreasing in strength as excavation sediment produced during enlargement in diameter is mixed with the solidified body.SOLUTION: In a creating method for a solidified body, a region spreading right above a bottom surface of a drilled hole 4 is not enlarged in diameter and left as a diameter-unenlarged region 31, a hole wall thereabove is cut with an expansion blade bit 8 to form a diameter-enlarged region 32, and sediment 33 produced by the cutting is not discharged, but dropped into the diameter-unenlarged region 31 to form a deposited layer 34. Then cement milk as a first solidification material is filled in the deposited layer 34 and solidified to create a first solidified body having substantially the same strength with the peripheral ground at the deepest part in the drilled hole 4. Then mortar as a second solidification material is cast and solidified in a non-deposition space between a top end of the deposited layer 34 and an upper edge of the diameter-enlarged region 32 so as to create a second solidified body stacked on the first solidified body. |
