| 摘要 |
PROBLEM TO BE SOLVED: To provide an underground heat intake hole eliminating an injection well, dividing inside of the hole for improving heat intake efficiency and separating a water pumping section from a water injecting section. SOLUTION: The underground heat intake hole is fixed by connecting a water pumping pipe (1) to a partition wall (3) putting a water cut-off material (4) thereon, it is inserted in a position divided into an upper aquifer (7) and a lower aquifer (8), and a hermetic cover (10) connecting the water pumping pipe (1) to a water injecting pipe (2) is put on the upper end of a casing (5) to divide the inside of the hole. COPYRIGHT: (C)2004,JPO
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