outils de forage souterrain pdf

3. Open-air drilling rig: according to the different working mechanism of crushing ore and rock, it is divided into steel rope percussion drill, drilling rig, cone drill and rotary drill. Because of low efficiency, the steel rope percussion drill has been gradually replaced by other drilling RIGS. The drill pipe drives the pneumatic impactor and the drill bit to rotate together, and the piston of the pneumatic impactor is used to impact the drill bit to break the ore and rock, which is usually used in small and medium-sized mines to drill holes with a diameter of 80 to 250 mm.

...

Les barres de forage, ou drill rods en anglais, jouent un rôle crucial dans l'industrie de l'exploration minière et pétrolière. Elles constituent un élément essentiel des équipements de forage, permettant de percer le sol et d'atteindre les profondeurs nécessaires pour explorer les ressources naturelles. Dans cet article, nous examinerons les différents types de barres de forage, leurs matériaux, ainsi que leur importance et leur application dans l'industrie.


...