| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a construction method of a pipe for heat extraction that can certainly and easily send a pipe for heat extraction into an in-pile heat-conductive material in a hollow part of the pile. <P>SOLUTION: When a precast concrete pile 11 with a hollow is buried in the ground, the in-pile heat-conductive material 13 is charged in the hollow part 12 of the pile 11. After the pile is buried, a pipe 16 for washing is quickly inserted into the in-pile heat-conductive material 13 while ejecting water 24a from the tip of the pipe. Once the pipe 16 for washing is inserted to a predetermined depth, the pipe 16 for washing is pulled out to form a room 26 for insertion of the pipe for heat extraction in the in-pile heat-conductive material 13. Once the pipe 16 for washing is pulled out, the pipe for heat extraction into which a heat-transfer medium heat-exchangeable with geothermal heat is supplied is quickly inserted in the room 26 for insertion of the pipe for heat extraction. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
