Method For Controlling Drilling Unit of Rock Drilling Rig, and Rock Drilling Rig
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United States of America Patent
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Issued Date -
Nov 14, 2013
app pub date -
Nov 16, 2011
filing date -
Nov 29, 2010
priority date (Note) -
Abandoned
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Abstract
A method for excavating a rock cavern one round at a time and a rock drilling rig for the same. The rock drilling rig includes at least one drilling boom and at least one drilling unit is arranged in the drilling boom. A plurality of holes of a round is drilled in accordance with a drilling pattern designed for the round. In order to drill each single hole, the drilling unit is controlled in a rotating angle that effects a location and direction determined for the particular hole from the drilling pattern designed for the particular round. The rotating angle of the drilling unit to be used for drilling the hole is determined on the basis of the rotating angle of the drilling unit carried out in connection with the drilling of one or more previously drilled holes.
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