Title:
【発明の名称】特に探査ボーリング及び採収ボーリング用に穿孔を掘り下げるための方法及び装置
Document Type and Number:
Japanese Patent JP2000511250
Kind Code:
A
Abstract:
A process and an apparatus for sinking drill holes, in particular exploration and extraction drill holes, with a drill pipe, which at its end facing the floor to be mined is provided with a guide point fixed in the longitudinal direction of the drill pipe and a drill head with at least one cutting element. The drill head can be moved in the longitudinal direction of the drill pipe between a top position, in which the guide point projects beyond the at least one cutting element, and a bottom position in which the at least one cutting element is positioned at the same height as the end of the guide point or projects beyond same in the operating direction. When the drill head is in the top position, the drill pipe is moved in the direction of the drill hole to be produced until the guide point by cooperating with the floor fixes it in position. Then the drill head is moved into its bottom position in order to produce the drill hole.
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Inventors:
Zibsek, Fritz
Von Birth, Hermann-Joseph
Von Birth, Hermann-Joseph
Application Number:
JP53146698A
Publication Date:
August 29, 2000
Filing Date:
November 25, 1997
Export Citation:
Assignee:
Bilt Maschinen-Und Borgherete-Fabrik Gamebehr
International Classes:
E21B4/02; E21B4/04; E21B4/16; E21B7/124; E21B7/128; E21B7/28; E21B10/26; E21B10/62; E21B43/29; E21C50/00; (IPC1-7): E21B7/128; E21C50/00
Attorney, Agent or Firm:
Takehiko Suzue (4 outside)