Method and arrangement for preparing a charging plan
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United States of America Patent
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Oct 3, 2017
Grant Date -
May 22, 2014
app pub date -
Jun 14, 2012
filing date -
Jun 14, 2011
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Abstract
A method for preparing a charging plan for rock cavern excavation, in which plan drill hole locations for a round to be drilled in a tunnel face are determined in a predetermined coordinate system by using a drilling plan created by means of a computer-assisted design program. The method determines pull-out of a round on the basis of the locations of the hole ends and the topography of the rock remaining after a round blast, and designs or modifies a charging plan for a subsequent round on the basis of the thus determined pull-out.
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