| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a ground agitation device capable of stably agitating-mixing up to the deep depth.SOLUTION: The ground agitation device comprises a first agitation blade 10 provided in a lower end part of a vertical rotary shaft and horizontally rotating around the vertical rotational axis and a second agitation blade 20 positioned above the first agitation blade 10, transmitting torque of the vertical rotary shaft and rotating along a vertical surface of crossing with a radial directional line while rotating around the radial directional line orthogonal to the vertical rotary shaft, and can intrude in its depth direction into the ground while rotating both of the first agitation blade 10 and the second agitation blade 20.</p> |
