E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/08 (2006.01)
Patent
CA 2658201
A method for the directional control of a rock-drilling ma-chine, the drilling unit (1) of the rock-drilling machine, which is located in a borehole (2), comprising at least a pi-lot drill bit (6) or an underreamer drill bit (8), the drill bit(s) (6, 8) being driven by an electric motor (10) via a gearbox (12), and the drill bit(s) (6, 8) being moved into the rock (3) by means of a feeding rod (4) extending from a feeding machine at the outside the borehole (2), and the drill bit(s) (6, 8), gearbox (12) and motor (10) being pivoted in a controlled manner about a steering axis (18) which is approximately perpendicular to the center axis (26) of the feeding rod (4).
La présente invention concerne un procédé pour la commande directionnelle d'une machine de forage de roche, l'unité de forage (1) de la machine de forage de roche, qui est positionnée dans un trou de forage (2), comprenant au moins un foret pilote (6) ou un foret élargisseur (8), le ou les forets (6, 8) étant entraînés par un moteur électrique (10) par l'intermédiaire d'une boîte à engrenages (12), et le ou les forets (6, 8) étant déplacés dans la roche (3) au moyen d'une tige d'avance (4) qui s'étend à partir d'une machine d'avance à l'extérieur du trou de forage (2), et le ou les forets (6, 8), la boîte à engrenages (12) et le moteur (10) pivotant de manière contrôlée autour d'un axe de direction (18) qui est approximativement perpendiculaire à l'axe central (26) de la tige d'avance (4).
Haughom Sigurd Kjell
Knutsen Kjell
Gowling Lafleur Henderson Llp
Norwegian Hard Rock Drilling As
Sira-Kvina Kraftselskap Da
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