GROUND IMPROVEMENT EXECUTION WORK METHOD

PROBLEM TO BE SOLVED: To improve the ground as design by preventing influence such as protrusion of the ground surface to the possible minimum level in improving the ground by using compaction grouting already developed as an excellent ground improvement. SOLUTION: In improving the ground by compressing/compacting surrounding bedrock by filling a self-hardenable/low-slump hard kneaded solidifying material in the ground by excavating an excavating hole in the ground 1, a conversion diameter and an interval of a consolidated body are reduced in a shallow layer part, and the conversion diameter and the interval are increased in the medium depth and the large depth large in the depth to restrain influence of protrusion in the ground surface to the possible minimum level to improve the ground as design. The conversion diameter and the interval of the consolidated body are reduced toward the shallow layer of the ground, and the conversion diameter and the interval of the consolidated body are increased in the ground of the medium depth and the large depth to restrain a compressing/compacting degree to surrounding bedrock to restrain influence of protrusion of the ground surface to smoothly and highly reliably improve the ground as design.