| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for force-feeding a fine grain material, in which the separation of the fine grain material is prevented while a fluid resistance can be lowered and the mixing ratio of a thickener can be reduced when the inside of a ground is supplied with the fine grain material such as sand, a silt, iron powder, iron oxide or the like together with water. SOLUTION: A slurry containing the fine grain material, the thickener and water is prepared, the fine bubble-filled slurry is obtained by supplying fine bubbles from the bottom section of the slurry in an agitating tank and the fine bubble-filled slurry is force-fed into the ground by a pump. COPYRIGHT: (C)2005,JPO&NCIPI
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