| 摘要 |
In a method and device for boring or drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock, wherein a borehole is formed by a percussive and/or rotary movement carried out by a drill bit ( 2 ) mounted on a drill rod assembly ( 3 ) and a jacket tube ( 6 ) coupled with the drill bit ( 2 ) is introduced into the borehole, it is provided that the jacket tube ( 6 ) is received in a socket ( 5 ) provided on the end facing away from the drill bit working surface, of an envelope tube ( 4 ) coupled with the drill bit ( 2 ), and that the jacket tube ( 6 ) is subjected to a percussive and/or compressive stress on its end facing away from the drill bit, whereby directionally precise boring or drilling is rendered feasible.
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