A Blasters Tool to Measure Fragmentation

摘要

This article discusses the Chord Analysis Method,which is a simpler manual method to assess fragmentation.The"Chord Analysis Method"uses a loading pole of known length and by counting the number of rock fragments along the pole and using simple geometric calculations,a rough estimate of average fragment size can be calculated.The"Chord Analysis Method"method will be developed and evaluated as a way for blasters to quantitatively assess the degree of fragmentation in a blast.While there are more precise commercial methods using digitally evaluated photographs,this manual method is a quick method to evaluate blasts when cameras are not available or time constraints don't allow a more precise measurement.This step in the quantification of fragmentation will complement the increased emphasis within the mining industry to integrate blasting more quantitatively into the mining process.