Title:
地中熱交換用Uチューブの設置方法及び設置装置
Document Type and Number:
Japanese Patent JP5307403
Kind Code:
B2
Abstract:
There is provided a method for drilling a hole into the ground and installing a geothermal transfer loop. A drilling apparatus is positioned at a desired location. The drilling apparatus includes a rotating and vibrating apparatus, such as a sonic drill, for rotating and vibrating a hollow drill string into the ground. The hollow drill string having an inner space. A hole is drilled to a desired depth by rotating and vibrating the hollow drill string into the ground while discharging fluid into the inner space of the hollow drill string. The fluid forming a fluid column in the inner space of the drill string. The fluid column impedes entry of ground materials into the inner space of the drill string and is vibrated to create a water hammer for adding an additional drilling force. A geothermal transfer loop is lowered into the inner space of the hollow drill string and the drill string is removed from the ground. The method may also include discharging grouting material into the hole.
Inventors:
ROUSSY RAYMOND J.
Application Number:
JP2007557294A
Publication Date:
October 02, 2013
Filing Date:
February 17, 2006
Export Citation:
Assignee:
ROUSSY RAYMOND J.
International Classes:
F16L1/024; F24J3/08; F28D21/00
Foreign References:
| WO2005003648A1 | ||||
| WO1999063282A1 |
Attorney, Agent or Firm:
Hitoshi Shinbo