| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an agitating blade structure that enables the efficient agitation by appropriately changing intervals between a middle agitating blade, and internal and external agitating blades that are defined by agitation diameters, according to the nature of sediment to be dug and agitated. <P>SOLUTION: In a triple agitating blade comprising an internal agitating blade, a middle agitating blade 13 with an agitation diameter larger than the internal agitating blade, and an external agitating blade with an agitation diameter larger than the middle agitating blade, the middle agitating blade is arranged in a freely attachable/detachable manner, and is any one of a plurality of agitating blades 13a-13c with different intervals, defined by the agitation diameters, from the internal and external agitating blades, thereby forming an agitating blade structure used for a ground improvement device or the like. <P>COPYRIGHT: (C)2012,JPO&INPIT |
