| 摘要 |
PROBLEM TO BE SOLVED: To provide a ground improvement method having a high quality and excellent economical efficiency by actively changing fluidity at each treating depth. SOLUTION: The ground improvement method mixes and agitates soil with a solidifier while excavating the present place ground. A mixing agitating head given a backhoe is penetrated into the ground and the ground is improved and treated as the ground improvement method. (a) The treating depth fluidity characteristic of treating ground is predetermined so that the fluidity of the treating ground is improved with the increase of the treating depth, a fluidity characteristic value as a target when the treating depth of an object region is specified is obtained from the characteristic and the fluidity of the treating ground immediately after treatment in the object region reaches the fluidity characteristic value in this case. (b) The rotational speed of a mixing agitating blade in the case of an actual mixing agitation is not made lower than half the rotational speed of the mixing agitating blade in the case of a non-loading. COPYRIGHT: (C)2007,JPO&INPIT
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