| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat transfer material in a heat transfer packing material at a desired position in a bored hole without requiring complicated blending adjustment. <P>SOLUTION: A pellet 12A as a heat transfer packing material 12 is formed by adding iron powder 12C to bentonite 12B. The pellet 12A is supplied in a bore hole H formed at the ground G, and water is supplied thereto to make the pellet 12A wet, thereby forming the heat transfer packing material 12. Thus, the heat transfer packing material 12 is solidified as the granular pellet 12A, and the iron powder 12C is added to the pellet 12A. and as a result, even if the pellet 12A is supplied in the bored hole H, the iron powder 12C remains in the pellet 12A, and hardly drops from the pellet 12A. Consequently, the heat transfer packing material 12 can be filled in the bored hole H while the iron powder 12C with the heat transfer characteristic more excellent than that of the bentonite 12B is dispersed therein. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
