| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an agitation method of ground capable of reducing agitation torque when agitating contaminated ground with an agitation device, and to provide a cleaning method of ground capable of cleaning ground while agitating the ground. <P>SOLUTION: The agitation device 1 comprises a rod 2, an agitation vane 3 attached to the tip part of the rod 2 and a base machine 4 for rotating the rod 2 and the agitation vane 3. A feed path 8 for feeding a nutrient which is a fluid and has lubricity into ground from the agitation vane 3 is disposed on the agitation vane 3, whereby the nutrient can be supplied into the ground. By supplying the nutrient into the ground, the nutrient exists around the agitation vane 3 and, therefore, frictional resistance between the agitation vane 3 and the ground can be reduced. Accordingly, the agitation torque for rotating the agitation vane 3 is reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
