Patent ID: 8392014

Claim:
A method for designing a drilling pattern for excavating rock, the method comprising: creating a drilling pattern in a computer-aided manner by means of a drilling pattern design program, wherein the computer-aided designing includes: determining for the drilling pattern at least a location and a hole direction angle of each drill hole in a coordinate system of the drilling pattern for a round to be drilled in the rock; positioning at least one group of holes in the drilling pattern, and several drill holes in said at least one group of holes; determining at least one master hole for the at least one group of holes in the drilling pattern; determining at least one dominating property for the at least one master hole; and determining, on the basis of the at least one dominating property of the at least one master hole, a property of at least one other drill hole; wherein the at least one master hole is editable to be added or removed and to change a dominating property, wherein the at least one dominating property is selected from the group consisting of a location in the at least one group of holes, a depth, a hole direction angle, a degree of charge, and a hole interval, and further comprising: determining at least one drill hole element for at least one group of holes in the drilling pattern; forming the at least one drill hole element by positioning in a group of holes a first hole location master and a second hole location master, a group of holes that remain between the first hole location master and the second hole location master forming an element line of the group of holes; positioning one or more intermediate holes on the element line, between the first and second hole location masters, by means of a drilling pattern design program; and determining for the at least one drill hole element at least one common parameter, the changing of which affects properties of drill holes belonging to the at least one drill hole element.