Soil cement column position detection structure and soil cement column position coordinate recording system using the structure

摘要

PROBLEM TO BE SOLVED: To provide a structure capable of accurately and fairly recording the positions of a large number of soil cement columns. A structure of the present invention includes a rotating shaft 213 and an excavating blade 216 provided at a lower end portion of the rotating shaft, excavates the ground with the excavating blade, and stirs and mixes a solidifying material with soil to be multiplied by the excavating. And a swivel 217 connected to an upper end portion 213t of a rotating shaft 213 so as to be relatively rotatable, and a position detection target 219 provided on the swivel 217. Equipped with. [Selection diagram] Figure 1