Method and arrangement for controlling percussion rock drilling
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United States of America Patent
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Apr 3, 2007
Grant Date -
Jan 13, 2005
app pub date -
Aug 9, 2004
filing date -
Feb 22, 2002
priority date (Note) -
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Abstract
The invention relates to a rock drilling arrangement and a method and program for controlling rock drilling on the basis of specific energy consumption. The specific energy of drilling is the quantity of energy used per a unit of length of the drilled hole. Not only the used impact energy, but also the energy used by at least one other sub-process is taken into account when determining the specific energy. Rotation energy is typically included, but feeding energy and flushing energy can also be considered. Drilling variables are adjusted so that the specific energy is of a predetermined size.
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