| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and device for constructing a hydraulic solidification material liquid-substituted column, which can constructing a substituted column free from inclusion of soil mass without earth removal, the substituted column having a stable quality regardless of the properties of a target ground, and having a uniform diameter from the leading end to the terminal end of the column. <P>SOLUTION: An excavating auger having a supply passage for hydraulic solidification material liquid includes at least an excavating claw and a discharge port for the hydraulic solidification material liquid at the leading end thereof. The excavating auger is propelled to a predetermined depth with rotation (normal or reverse rotation) by a construction device provided with an auger motor. Thereafter, the excavating auger is pulled up with or without rotation (normal or reverse rotation) while discharging the hydraulic solidification material liquid from the discharge port to fill a predetermined section of an excavation part with the hydraulic solidification material liquid. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
