Sandvik Mining and Construction Oy

Markus Saarela

Jukka Osara

Jouko Muona

Jussi Puura

Tommi Säleniemi

Vesa Peltonen

Jarno Viitaniemi

Pertti Koivunen

Juho Seppälä

Tatu Hautala

Pekka Laine

Juho SEPPÄLÄ

Method and apparatus for controlling rock drilling with a percussion device belonging to a rock drill to deliver stress waves to rock through a tool by pushing the tool against the rock by means of a feed motor and rotating simultaneously the tool by means of a rotation motor, whereby the maximum feed force is determined, pressure medium is supplied to the feed motor and to the rotation motor and the feed force is controlled according to the drilling conditions. The feed force is controlled on the basis of the feed speed and the rotation torque. The apparatus has a load control valve which controls the feed.

Method and apparatus for controlling rock drilling

A method and equipment for displaying holes to be drilled when drilling holes into rock with a rock-drilling rig having control equipment and a display belonging thereto and measuring means for defining the direction and position of a drill rod, by using a pre-designed drilling plan defined in a three-dimensional coordinate system, in which a starting point (to) and end point (to) is defined for each hole to be drilled. A base plane running through the end point (to) of the hole and parallel to the projection plane is defined for each hole (to), and a projection of the intersection of a hole or its extension created when drilling in accordance with the current location of the drill rod and the defined base plane is displayed with a graphical location symbol on the projection plane.

Method and equipment for displaying drill holes and method for directing drill rod when holes are drilled into rock

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Tampere, Finland

Markus Saarela